INDEX TO VOLUME 51

Only leading articles are set in boldface type.

Abdel-Gawad, A. M. X-ray spec-trographic determination ofhafnium-zirconium ratio inzirconium minerals

Absorption corrections, computa-tion of, and the significance ofend effect (Burnham)

Acmite-diopside, the system, andits bearing on the stabilityrelations of natural pyroxenesof the acmite-hedenbergite-diopside series (Yagi). . . . .

Adelphol i te (:Samarskite)(Vorma, Hoffren). .

Aegirine-augite, zincian, and jef-fersonite from Franklin, NewJersey (Frondel, Ito). .

Albite, metamorphic, opticalpropert

Alexander,B . H .

ies of ( Crawford) 523J. B. and Fl inter,

155 1Alkalic rocks and carbonatites of

the Arkansas River Canyon,Fremont County, Colorado. 3.The Amethyst carbonatites(Heinrich, Shappirio). 1088

Allen, W. C. An r-ray method fordefining composition of amagnesinm spinel. . 239

Alluaudite, Palermo "huhnerko-belite" is (Fisher) 935

Aluminum hydroxide-montmoril-lonite complexes, the natureof (Brydon, Kodama). . 875

Aluminum silicates, thermody-d5'namic properties of (Hokn,Kleppa) 1608

American gem trails (Pearl) (Bookreview). 543

Ames, L. I-., Jr. Cation exchangeproperties of wairakite andanalcime.. . . 903

Amphiboles, monoclinic, relation-ships between cell param-eters and chemical composi-tions of (Colville, Ernst, Gil-b e r t ) . . 1 7 2 7

Analcime and wairakite, cationexchange properties of(Ames) 903

Analcite in the Newcastle coalmeasure sediments of theSydney Basin, Australia(Loughnan).. . 486

Analcite solid solutions, the melt-ing of, in the systemNaAlSiOr-NaAlSiaO s-IfzO(Peters , Lu th ,Tut t le ) . . . . 736

Analysis instrumentation ( Fowler,Eanes, Kehoe) (Book review) 945

Anderson, A. T., Jr., Mineralogyof the Labrieville anorthosite,

Quebec. 1671Anderson, D. D. and Reynolds,

R. C. Umiat bentonite : an un-usual montmorillonite fromUmiat, Alaska... l4+3

Anderson, O. L. An approximatemethod for computing theisotropic sound velocities us-ing refractive index data. . . 1001

Andersen, S. with Semenov, E. I.Gerassimovsky, V. I. Maksi-mova, N. V. and Petersen,o. v.. 1547

Anorthoclase for Antarctica, phys-ical properties of (Boudette,Ford) 1374

Anorthosite, Labrieville, min-eralogy of the, Quebec (An-d e r s o n , J r . ) . . . . . 1 6 7 I

Aoki, K. Phenocrystic spinelifer-ous titanomagnetites fromtrachyandesites, Iki Island,

Japan. 1799Apatite, carbonate-bearing, from

Faraday Township, Ontario,Canada (Gulbrandsen,K r a m e r , B e a t t y , M a y s ) . . . . . 8 1 9

effects of magnesium onthe formation of (Simpson) 205

fluor, manganese- andstrontium-bearing, from thePeerless pegmatite, South

+64

159

9 7 6

1553

1406

1829

1830 INDEX TO VOLUME 51

Dakota (Young, Sheridan,Munson ) 1516

fluor-chlor-oxy, ildsphene from Crystal Lodepegmatite, near Eagle, Colo-rado (Young, Munson). 1+76

Arnold, R. G. Mixtures of hexag-

onal and monoclinic pyrrho-

tite and the measurement of

the metal content of pyrrho-

tite by r-ray diffraction. . . . 1221

Attakolite (Attacolite) (Gabriel-

s o n , G e i j e r ) . . 5 3 4

Augite, an unusual hourglass

structure in (Preston) 1227

Aumento, F. Stability, latticeparameters, and thermal ex-pansion of B-cristobalite. 1167

Axinite, manganoan, from the

Mesabi Range, Minnesota,

short- range chemical var ia-

t i o n s i n a ( F r e n c h ) ( a b s . ) . . 1 5 6 1

Babcock, L. I . The manganese

bearing minerals of Charn-pion Mine, Champiorr , Mich-

igan (abs.) . .Babefphite (Nazarova,

sova, Shaskirr)

. 1560Kuznet-

r547Babushkin, V. L, Matveev, G. M.

and Mchedlov-Petrosyan

O . P . ( B o o k r e v i e w ) . . . . . 2 5 1

Bachet, B. with Cesbron, F. and

Oosterbosch, R. 1815

Badgley, P. C. (Book review). . 943

Bai ley, S. W. wi th Bradley, W. F.(Book rev i ew) . 1556

with Shirozu, H. Crystalskucture of a two-layer Mg-vermiculite 112+

Baker, 'W.

E. An x-ray diffractionstudy of synthetic membersofthepyromorphiteseries. 1712

Ballman, A A. with Wood, D. L.Blue synthetic quartz 216

Banno, S. with Forbes, R. B.Nickel-iron content of perido-tite inclusion and cognateolivine from an alkali-olivinebasa l t . . 130

Barczak, V. J. Schroeckingerite

from Ambrosia Lake uranium

distr ic t . . . 929

Barite-quartz phase in the Fire-

sand River Carbonate,

Wawa, Ontario (Heinrich,

Vian) (abs.) 1562

Barker, D. S. Application of Plas-tic peel techniques to the

study of silicate rocks 1541

Barytolan'rprophyllite (Peng,

Chang). 1549

Basalts, petrology of the Karroo,

of Basutoland (Cox, Hor-

nung ) . . . . 1114

Bayer, G. ar.rd Hoffman, W. Com-

plex alkali titanium oxides

A*(BtTis-y)Oro of the q-

MnOz structure- type. 511

Beatty, L. B. with Gulbrandsen,

R. A., Kramer, J. R. and

Mays, R. E. Carbonate-bear-

ing apatite from FaradaY

Township, Ontario, Canada 819

Bentonite, Umiat: an unusual

montmorillonite from Umiat,

Alaska (Anderson, Reynolds) 1443

Berger, K. C. (Book review). . 543

Berman. R. (Book review) 941

Berndt i te (Moh) 1551

Berrl'l1g (Nuflield, Harris) 532

Beryl in a Montana tactite body

(King). 502

Beus, A. A. (Book review) 1559

Bezsmertnaya, M. S. and Sobo-

l eva , L . N . . . . 531

Biedl, A. Scandium borate,

scBoe' 521

with Frondel, C. and Ito'

J. New type of ferric iron

tourmaline. . . 1501

Binocrrlar microscope for orienta-

tion of single crystals, use of

the (Robinson). . . 1243

Blake, R. L., Hessevick, R. E.,

Zoltai, T. and Finger, L. W.

Refinement of the hematite

structure 1,23

Blanchard. F. N. Thermolumines-

cence of fluorite and age of

deposi t ion. . . 474

INDEX TO VOLUME 5I 1831

Bloss, F. D. Suggested terminol- Mason) 198ogy for interstratified clay Burnham, C. W. Computation ofminerals. 855 absorption corrections, and

with Robinson, P. D. and the signigicance of end effect 159Fang, J. H. Cell dimensions -- with Prewitt, C. T. Theand space group of tamaru- crystal structure of jadeite,g i t e . . . . . . . 1 9 0 5 N a A l S i : o 0 . . . . . . 9 5 6

Borate, scandium, ScBOr (Biedl) 521 Burns, R. G. and Fuerstenau,Bottinga, Y. Kudo, A. and Weill, D. W. Electron-probe deter-

D. Some obserrations on mination of inter-element re-oscillatory zoning and crys- lationships in manganeseta l l i za t ion o f magmat ic nodu les . . . . . . . . 895plagioclase. 792 Burri, G., Graeser, S., Marumo,

Boudet te , E . L . and Ford , A . B . F .andNowack i ,W. . . . . . . . 531Physical properties of anor- -with Marumo, F.. . . S3ZthoclasefromAntarctica.. 1374 Burvanova, E. A., Strokova, G. S.

Boyer, R. E. (Book review). 943 and Shitov, V. A.. . . . . 1548Bradley, J. with Mandarino, J. A. Buseck, p. R, and Keil, K. Meteo-

a n d H a r r i s , D . C . . . . . 5 3 3 r i t i c r u t i l e . . . . . 1 5 0 6Bradley, W. F. and Bailey, S. W. Bystrdm-Asklund, A. M. Sample

(Book review). . 1556 cups and a technique for side-Bredigite, Iarnite, and 7 dicalcium ward packing oI x-ray diffrac-

silicates from Marble Canyon tometer specimens. . . 1233(Bridge). 1766 Bykova, A. V. with Semenov,

Briartite (Francotte, Moreau, E. I. and Khomyakov, A. p.. 530Ottenburgs, Levy). . . 1816 Cabri, L. J. with Kracek, F. C. and

Bridge, T. E. Bredigite, Iarnite, Ksanda, C. J. phase rela-and 7 dicalcium silicates from tions in the silver-telluriumMarb leCanyon. . . 1766 sys tem. . . . 14

Brindley, G. W. with de Souza Cacoxenite from ArkansasSantos, P. and de Souza (Fisher). . . 1811Santos, H. Mineralogical Calcite and pyrite, unique inter-studies of kaolinite-halloysite growth of (Zimmer) (abs. ) . 1563clays: Part IV. A platy min- Cameron, E. N. with Ramsden,eral with structural swelling A. R. Kamacite and taeniteand shrinking characteristics 1640 superstructures and a meta-

Bromellite, S5'nthetic III. Some stable tetragonal phase inoptical properties (Newkirk, iron meteorites 37Smith, Kahn) 1,41 ,,Kamacite and taenite

Brovkin, A. A. with Grigoriev, superstructures and a meta-A. P. and Nekroasov, L Y. 1818 stable tetragonal phase in

Brucite in Alpine serpentinites iron meteorites" Correction. . lS44(Hostefler, Coleman, Mump- Campbell, I. Presentation of theton, Evans). . . . 75 Roebling medal to Adolf

Brydon, J. E. and Kodama, II. Pabst.. S4gThe nature of aluminum hy- Carpenter, A. B., Chalmers, R. A.,droxide-montmorillonite com- Gard, J. A., Speakman, K.plexes. 875 and Taylor, H. F. W. Jennite,

Ruergerite, a new species of tour- a new mineral . . 56maline (Donnay, Ingamells, Catoptrite and yeafunanite-

t832

stuffed pyrochroite struc-tures? (Moore) 1494

Cesbron, F., Bachet, B. andoosterbosch, R'. 1815

Chabazite, silica-rich, from theBarstow Formation, SanBernardino County, SouthernCalifornia (Gude, Sheppard) 909

Chalmers, R. A. with CarPenter,A. B., Gard, J. A., Speakman'K. and Taylor, H. F. W'. Jen-n i t e . a n e w m i n e r a l . . . . 5 6

Chang, C. with Peng, T. 1549Charnockite, myrmekite in, from

South-West Nigeria (Hub-bard) 762

Chase, A. B. and Osmer, J' A.Growth of single crystals ofZrOzand HfOz from PbFz. 1808

Chevkinite and serrierite' Virginiametamict minerals (Mitchell) 1394

Chlorites in the sYstem MgO-AluO;-SiOz-HzO, Phase rela-tionships of (Fawcett, Yoder) 353

Chondrite, Mezij-Madaras' sig-nificance of iron-rich silicatesin the (Dodd, Jr., VanSchmus, Marvin). . 1177

Christ, C L. with Garrels, R. M.(Book review). .

Chrysotile asbestos, the morPhol-

ogy of, as inferred from nitro-

gen adsorption data (Nau-

53s

mann, Dresher) . 71'1-- dehydroxylation, the influ-

ence of samPle texture on

(Naumann, Dresher)

fiber, hollow (Clifton,

Hugg ins , She l l ) .

Clark, A. M. wi th StamPfl , E. F

Clark, G W. wi th Kopp, O. C.

Synthetic pollucites in the

system 6tr6 ' , \ l rQr '4SiOr

Cs2O' Fe2Or' 4siOrHzO-theirphase relationshiP and PhYsi-ca l p rope r t i es : A d i scuss io r r . .

Classification by elements (index

of new minerals, discredited

minerals, and changes of

mineralogical nomenclature)

INDEX TO VOLU.IIE 5I

(Fleischer) 1336--- by anionic groups (index of

new minerals, discredited

minerals, and changes of

mineralogical nomenclature)(Fleischer) 1327

Clay minerals, interstratifi ed, sug-

gested terminologY for(Bloss). . .

mica-tyPe, weatheringeffects on the structures of(Giiven, Kerr).

Clays, selected Great Basin PlaYa(Giiven, Kerr). 1056

--- and clay mitrerals-Pro-

ceedings of the thirteenth na-

tional conference on claYs and

clay minerals (BradleY,

Bai ley) (Book review). 1556

Cl i f ton, R. A. Jr . , Huggins, C. W.

and Shel l , H. R' Hol low

chrysotile fibers 508

Clinopyroxenes, common' unit cell

dimensions and ionic sub-

stitutions in (Viswanathan) 429

Ctoke. P. L. (Book review)

536, 540, 541 , 1821, 1822

Coconinoite, a new uranium min-

eral from Utah and Arizona

(Young, Weeks, MeYrowitz) . 651

Cohen, L. H. and Ribbe' P. H.

Magnesium phosphate min-

eral replacement at Mono

Lake. Cal i fornia . . . 1755

Cole, W. F. and Crook, D. N' A

note on the examination of

pyrite in conveltiortal differ-

e r r t i a l t he rma l ana l r s i s equ iP -

mellt. 499

Coleman, R. G. with Hostetler,

P. B., Mumpton, F. A. and

Evans, B. W. Brucite in

Alpine serpentinites 7 5

Ross, D. R. and Meyro-

witz, R. Zellerite and meta-

zellerite, new uranYl car-

bonates 1567

Colville, P. A., Ernst, W' G. and

Gilbert, M. C. RelationshiPs

between cell parameters and

855

858

t200

508155 1

12+3

chemical compositions ofmonoclinic amphiboles . 17 27

Con-rplexing and hydrothermal oredeposi t ion (Helgeson) (Book

review). 541

Cordierite, the polymorphism of,I: The crystal structure oflow cordierite (Gibbs) 1068

Cossyrite from the island of Pan-telleria, a new analysis of(Zies) 200

Cox, K. G. and Hornung, G. Thepetrology of the Karroo ba-salts of Basutoland. 1414

Crawford, M I-. Optical proper-

ties of metamorphic albite. . 523

Crednerite (Gaudefroy, Dietrich,

Permingeat, Picot) . . 1819

Cristobalite, B- stability, latticeparameters, and thermal ex-pansion of (Aumento). 1167

Crook. D. N. wi th Cole. W. F. Anote on the examination ofpyrite in conventional differ-e r r t i a l t he rma l a r ra l vs i s equ ip -ment. 499

Crystallographic book list(Megaw) (Book review) 255

Cummingtonite, (Mg,Fe) ;(SiaO1)z(OH)r, a further refinementof the crystal structure of(Fischer) 814

Data of geochemistry. Chapter F.(White, Henl, Waring) (Book

review). 1821

de Kun, N. (Book review). 1557

de Souza Santos, H. with deSouza Santos, P. and Brind-l"y, G. W. Mineralogicalstudies of kaolinite-halloysiteclays: Part IV. A platy min-eral with structural swellingand shrinking characteristics 1640

de Souza Santos, P., de SouzaSantos, H. and Brindley,G.

'W. Mineralogical studies

of kaolinite-halloysite clays:Part IV. A platy mineral withstructural swelling andshrinking characteristics. . .. 1640

INDEX TO VOLU],[E 51 1833

Deer, W. A. , Howie, R. A. and

Zussrran, J. (Book review) 1555

Demesrlael<eri te ( Cesbron, Bachet

Oosterbosch). . 1815

Dennen, W. FI . wi th Ri t ter , C. J.Blackening of natural qttartz

by 7- i r radiat ion. . 220

Denning, R. N{. (Book review). . .

. 538, 539, 542,941,942,945, 1822

Depths of the earth; caves and

caverns of the United States(Hal l iday) (Book review). 1559

Diamond, S., White, J. L. and

Dolch, W. L. Effects of iso-

morphous substitution in hY-

drotherm ally-synthesized to-

bermorite 388

Diaspore, dehydration of, at waterpressures from 15 to 15,000p s i ( W e b e r ) . . . 2 3 5

I)ietrich, J. with Gaudefroy, C.,

Permingeat, F. and Picot , P. . 1819

I ) j e r f i s h e r i t e ( F u c h s ) . . . . 1 8 1 5

Dodd, R. T. Jr., Van Schmus,

W. R. and Marvin, U. B. Sig-

nificance of iron-rich silicates

in the Mezti-Madaras chon-

drite. . . 1177

Dolch, W. L. with Diamond, S'

and 'W'hite,

J. L. Effects of

isomorphous substitution in

hydrothermally-synthesizedtobermorite. . . 388

Dolomite, organic, from Point

Fermin, California (Spotts,

S i l ve rman ) . . . 7 l +4

Donnay, G., Ingamel ls, Co. O.

and Mason, B. Buergerite, a

new species of tourmaline 198

Dorofeeva, K. A. with Malinko,

S. V. , L is i tsyn, A. E. , Ostrav-skaya, I. V. and Shashkin,

D. P. r8l7

Dresher, W. H. with Naumann,

A. W. The morphology of

chrysotile asbestos as in-

ferred from nitrogen adsorp-

t i o n d a t a . . . . 7 1 1--- The influence of sample

texturd on chrysotile dehy-

1834

droxylation.. 1200Dutra, C. V. with lferz, N. Trace

elements in alkali feldspars,

Quadril6tero Ferrifero, Mi-nas Gerais, Brazil.. 1593

Eanes, R. D. with Fowler, L. J.and Kehoe, T. J. (Book re-view) 945

Eclogite, peridotite and pyropefrom the Navajo country,Arizona and New Mexico(OtHara, Mercy) 336

Effects of ultrasound on the kine-tics of crystallization (Kapu-stin) (Book review) . . 942

Eitel, W. (Book review). . . 249,251Electron-probe determination of

inter-element relationships inmanganese nodules (Burns,

INDEX TO VOLUME 51

Fuerstenau).Eliason, J. R. Montmorilloniie

exchange equilibria withstrontium-sodium-cesium . .

Epididymite, crossed axial planedispersion in (Petersen). . . .

Epoxy resin, preparation of thinsections of fragmental mate-r ia ls us ing ( Hagn i ) .

Ernst, W. G. with Colville, P. A.and Gilbert, M. C. Relation-ships between cell param-eters and chemical composi-tions of monoclinic amphi-b o l e s . . . . .

Eschman, D. F. (Book review) . . .Evans, B. W. with Hosteuer'

P. B., Coleman, R. G. andMumpton, F. A. Brucite inAlpine serpentinites. .. . .

Fahey, J. J. with Stewart, D. B.,Walker, G. W. andliirright,T. L. Physical properties ofcalcic labradorite from LakeCounty, Oregon

" t a r rDanks l te ( l v lo rga l l ) .

Fang, J. H. wi th Robinson, P. D.

and Bloss, F. D. Cel l d imen-

sions and space group of

tamarugite

Faust, G. T. The hydrous nickel-

magnesium silicates-thegarnierite group 279

( B o o k r e v i e w ) . . . . 1 5 5 5Fawcett, J. J. and Yoder, H. S.,

Jr. Phase relationships ofchlorites in the system MgO-ALO:-SiOz-HzO 353

Feldspar, alkali, solvus in the sys-tem Na2O-K2O-AbO;-SiOr-H:O (Luth, Tuttle) 1359

Feldspars, alkali, trace elementsin, Quadrildtero Ferrifero,Minas Gerais, Brazil (Herz,Dut ra ) . . . 1593

barium, from Franklin,New Jersey (Frondel, Ito,Hendricks)

Ferromagnetism in zircon, thesource of (Lewis, Senftle). . .

Finger, L. 'W.

with Blake, R. L.,Hessevick, R. E. and Zoltai'T, Refinement of the hema-tite structure. .

Finney, J. J. The unit cel l oftarbrr t t i te and paradamite

Fischer, K, F. A further refine-ment of the crystal structureof cummingtonite, (Mg,Fe)r(SioO")'(OH):

Fisher, D. J. Palermo "htihnerko-be l i te " i s a l laua r rd i te

Cacoxenite from Arkansas-- (Book review).- professor, reply to (Moore)Fleischer, M, Alphabetical index

of new minerals, discreditedminerals, and changes ofmineralogical nomenclature.

(Book review). . .- classification by anionic

1388

1+67

t 2 3

12t8

8 1 4

9351 8 1 1542939

1251256

1 3 2 7groupsClassification by elements 1336Index of new mineral

names, discredited minerals,and changes of mineralogicalnomenclature in Volumes 1-50 of The American Min-eralogist. 1248

- )* t:T"'*"-:;;

is+0. rsrs

895

324

9r6

1237

,/ .')

1727543

1 7 7533

1805

INDEX TO

Flinter, B. H. with Alexander,

VOLUME 51 I 6 J 5

R. G. Electron-probe deter-mination of inter-element re-l ^ + : ^ . . ^ L : ^ ^ : . ^laTlonsnrps ln manganesenodules 895

Gabrielson, O. and Geijer, P.. . . . . 534

Ga lena , mecha r r i ca l tw inn ing i n ,

the origin of (Lyall). 243

Gard, J. A. with Carpenter, A. 8.,Chambers, R. A., Speakman,K. and Taylor, H. F, W.

Jenn i t e ,anewmine ra l . . . . . 56Garnet growth by mineralogical

environment, dimensionaland compositional control of(Gresens). 524

Garnierite group, the hydrous

nickel-magnesium silicates( F a u s t ) . . . . . 2 7 9

Garrels, R. M. and Christ, C. L.(Book review) 535

Gaspeite, (Ni, Mg, FeXCOa), anew carbonate from theGasp6 Peninsula, Quebec(Kohls, Rodda). . 677

Gaudefroy, C., Dietrich, J.,Permingeat, F. and Picot, P.. 1819

Gaudette, H. E., Grim, R. E. andMetzger, C. F. Illite: A modelbased on the sorption be-havior of cesium 1649

Geijer, P. with Gabrielson, O. . . . 534Geochemistry of beryllium and

genetic types of berylliumdeposits (Beus) (Book re-v i e w ) . . . . . . . 1 5 5 9

Geological investigations of chro-mite in California, KlamathMountains. Chromite de-posits of Shasta, Tehama,Trinity and Humboldt Coun-ties, California (Wells,Hawkes) (Bookrev iew) . . . . 1558

Geological problems in lumarresearch (Green) (Book re-v i e w ) . . . . . 1 5 5 8

Gerassimovsky, V. I. withSemenov, E. I . , Maksimova,N. V., Andersen, S. andP e t e r s e n , O . V . . . . . . 1 5 4 7

Gibbs, G. V. The polymorphism of

J . 8 . . . . . .Fluellite, AlrPO4Fz(OH).7HrO,

the crystal structure of (Guy,

Jeffrey).Fluorite, thermoluminescence of,

and age of deposition (Blan-chard)

Foit, F. F. Jr. New data onr o e b l i n g i t e . . . . .

Forbes, R. B. and Banno, S.Nickel-iron content of perido-tite inclusion and cognate oli-vine from an alkali-olivinebasalt. .

Ford, A. B. with Boudette, E. L.Physical properties of anor-thoclase from Antarctica. . .

Foster, M. D. and Schaller, W. T.Cause of colors in wavellitefrom Dug Hill, Arkansas. . . .

Fowler, L. J., Eanes, R. D. andKehoe, T. J. (Book review). .

Francotte, J., Moreau, J., Otten-burgs, R. and Levy, C.. . .

French, B. M. Short-range chem-ical variations in a manga-noan axinite from the MesabiRange, Minnesota (abs. ). . .

Frondel, C., Biedl, A. and Ito, J.New type of ferric iron tour-maline . .

-- with Fuchs, L. H. andKlein, C., Jr. Roedderite, anew mineral from the In-darch meteorite..

- a n d l t o , J . . .and Ito, J. Hendricksite, a

new species of mica . .--- and Ito, l. Zincian aegir-

ine-augite and jeffersonitefrom Franklin, New Jersey.

- Ito, J. and Hendricks,J. G. Barium feldspars fromFranklin, New Jersey

F u c h s , L . H . . . . . . .- Frondel, C. and Klein, C.,

Jr. Roedderite, a new mineralfrom the Indarch meteorite. .

Fuerstenau, D. W. with Burns,

155 I

1579

+74

504

130

l . ) / +

t a a

945

1 8 1 6

1561

1501

949533

1r07

1406

1388r.t r.)

949

I 836

cordierite I: The crystalstructure oflow cordierite. . . 1068

Gilbert, M. C. with Colville' P. A'and Ernst, W. G. Relation-ships between cell Param-eters and chemical comPosi-tions of monoclinic amPhi-boles 1727

Gnome event near Carlsbad, NewMerico, mineralogical in-vestigations in the debris ofthe (Kahn, Smith) 1192

Gordillo, C. E., Linares, E.,Toubes. R. O. and H. Win-chell Huemulite, NaaMgrnOrs.24HzO, a new hydrous so-dium and magnesium vana-date from Huemul mine'Mendoza Province, Argen-t ina. . 1

Gorzhevskaya, S. A., Lugovskoi,G. P. and Sidorenko, G' A'. . 1551

Gottardi, G. X-ray crystallographyo f r i n k i t e . . . 1 5 2 9

Graeser, S. with Burri, G.,Marumo, F. and Nowacki,

w. 531Green, J. (Book review). . . . 1558Greigite fronr the Lojane chrom-

ium deposit, N{acedor.ria(Radus inov i6 ) . . 209

Gresens, R. L. Dimensional andcompositional control of gar-net growth by mineralogicalenvironment 524

Grigoriev, A. P., Brovkin, A. A'and Nekrasov, L Y. 1818

_and Nekrasov , I . Y . . . 1818Grim, R. E. with Gaudette, H. E.

and Metzger, C' F. Illite: Amodel based on the sorPtionbehavior of cesium. t649

Gross, E. B. and Heinrich, E. Wm.Petrology and mineralogY ofthe Mount Rosa area, ElPaso and Teller Counties'Colorado.Il.Pegmatites . . . 299

Petrology and mineralogYof the Mount Rosa area, ElPaso and Teller Counties'

INDEX TO VOLUME 51

Colorado. III. LamProPhYres

and mineral deposits 1433

Gude, A. J. , 3rd and ShePPard,

R. A. Silica-rich chabazite

from the Barstow Formation,

San Bernardino CountY,

southern Cal i fornia . . . . . 909

Guidotti, C. V. Variations of the

basal spacings of muscovite in

sillimanite-bearing meta-

pelites of northwestern Maine 1778

Gulbrandsen, R. A., Kramer, J. R.

Beatty, L. B. and MaYs, R. E.

Carbonate-bearing aPatite

from Faraday TownshiP'

Ontario, Canada. . .Giiven, N. and Kerr, P.

lected Great Basinclays.

. 8 1 9F. Se-

playa. 1056

-- weathering effects on thestructures of mica-tYPe claYminerals 858

Guy, B. B. and Jeffrey, G. A. The

crystal structure of fluellite'

AlrPO4f ' r (OH) THzO-' . 1579

Hagni, R. D. The PreParation of

thin sections of fragmental

mater ia ls using epoxy resin. . 1237

Hal l iday, Wm. R. (Book review). 1559

Han, 'I'.

Textural relations of

hematite and magnetite in

some Precambrian metamor-

phosed oxide iron-formations(abs.) 1561

Harkerite (OstrovskaYa, Pertsev,

N i k i t i n a ) . . . . 1 8 2 0

Harr is , D. C. wi th Mandar ino,

J. A. and Bradley, J. 533--wi th Nuff ie ld, E. W. 532, 533

Hawkes, H. E. wi th Wel ls, F. G.

(Book review) 1558

Hays, J. F. Stability and ProPer-ties of the synthetic PyroxeneCaAlzSiOs,

Heinr ich, E. Wm (Book review. .1524

. 2 5 3 , 5 4 2 , 1 5 5 5 . 1 5 5 8 , l 5 5 ewith Gross. E. B. Petrol-

ogy and mineralogY of theMount Rosa area, El Pasoand Teller Counties, Colo-

INDEX TO

rado. III. Lamprophyres andm i n e r a l d e p o s i t s . . . . . . 1 4 3 3

with Gross, E. B. Fetrol-ogy and mineralogy of theMount Rosa area, El Pasoand Teller Counties, Colo-rado. II. Pegmatites. . . 299

and Shappirio, J. R. Al-kalic rocks and carbonatitesof the Arkansas River Can-yon, Fremont County, Colo-rado. 3. The Amethyst car-bonatites 1088

and Vian, R. W. A barite-quartz phase in the FiresandRiver Carbor.rate, Wawa, On-tario (abs.) 1562

Helgeson, H. C. (Book review). . . 541Hellandite (Oftedal). 534Hem, J. D. with White, D. E. and

Waring, G. A. (Book review) 1821Hematite and magnetite in some

Precambrian metamorphosedoxide iror.r-formations tex-tural relat ions of (Han) (abs.) 1561

Hematite structure, refinement ofthe (Blake, Hessevick,Zoltai, Finger). 123

Ifendricksite, a new species ofmica (Frondel, Ito). . 1107

Iferz, N. and Dutra, C. V. Traceelements in alkali feldspars,Quadril6tero Ferrifero,

VOLUME 51 1837

halite in Recent salt fromBajaCali fornia . . 99

Hornfels, phase equilibria in calc-silicate, Lewis and ClarkCounty, Montana (Melson). . 402

Ilornung, G. with Cox, K. G. Thepetrology of the Karroo ba-salts of Basutoland. . L+14

Hostetler, P. B., Coleman, R. G.,Mumpton, F. A. and Evans,B. W. Brucite in Alpine ser-pentinites 75

Ilower, J. and Mowatt, T. C. Themineralogy of illites andmixe d-laver illite /montmoril-lonites. .

Howie, R. A with Deer, W. A.and Zussman, J. (Book re-

v i ew) . . 1555

Hubbard, F. II. Myrmekite in

charnockite from South-

Wes tN ige r i a . . . 762

Huemulite, NarMgVroOzs' 24H2O,

a new hydrous sodium and

magnesium vanadate from

Heumul Mine, Mendoza Pro-

vince, Argentina (Gordillo,

Linares, Toubes, Winchell) 1

Huggins, C. W. with Clifton,

R. A. , Jr . and Shel l , H. R.

Hol lowchrysot i lef ibers. . . . 508

"H t ihner l<obel i te" , Palermo, is

a l l u a u d i t e ( F i s h e r ) . . . . . 9 3 5

Hyde, C. and Landy, R. A. Whe-

wellite from septariau cou-

cret ions near Mi lan, Ohio. 228

Hydrornolysi te(Povarennykh). 1551

Hydroxyl . aschar i te (Gr igor iev,

B r o v k i n , N e k r a s o v ) . . . . 1 8 1 8- (Grigoriev, Nekrasov) 1818

Hydroxyl-bastnaesi te(Kir i l lov) . . 1819-- (Svyazhin) . . 1819

Illite: A model based on the sorp-

tion behavior of cesium(Gaudette, Grim, Metzger) 16+9

Illites and mixed-layer rllite/montmorillonites, the min-

eralogy of (Hower, Mowatt). 825

Imholite (Burri, Graeser, Ma-

rumo. Nowacki) . . 531

825

Minas Gerais, Brazil . .Hessevick, R. E. with Blake,

R. L., Zoltai, T. and Finger,L.

'W. Refinement of the

hemat i te s t ruc tu re . . . . . .Iloffer, J. M. Compositional vari-

ations of plagioclase feldsparfrom a basaltic lava flow. .

Hoffman, W. with Bayer, G. Com-plex alkali titanium oxidesA*(ByTie-y)Oro o{ the a-MnOrstructure-type. . .

Hoffren. V. with Vorma. A.. . .Holm, J. L. and Kleppa, O. J. The

thermodynamic properties ofthe aluminum silicates

Holser, W. T. Diagenetic poly-

1593

1 2 3

807

. ) l r

1608

1838 INDEX TO VOLUME 51

Index of new minerals, dis-credited minerals, andchanges of mineralogicalnomenclature, alphabetical(Fleischer) 1.251.

discredited minerals, andchanges of mineralogicalnomenclature in Volumes l-50 of The American Mineral-ogist (Fleischer) .. .. 1248

Indicatrix orientation and 2Vwith the spindle stage, deter-mination of: a caution anda t e s t ( W r i g h t ) . . . . . . . 9 1 9

Inesite, evidence for [(SiOr)J-type chains in, as shown by.x-ray and infrared absorp-tion studies @yall, Thread-gold). 75+

Ingamells, C. O. with Donnay, G.,and Mason, B. Buergerite, anew species of tourmaline. . . . 198

Ingram, B. L. with Murdoch, J. Acerian vesuvianite fromCalifornia

Introduction to soil behavior(Young, lA,Iarkentin) (Bookreview). . . 1823

Introductory soils (Berger) (Bookreview). 543

Ion-exchange constants of na-tural glasses by the electrodemethod (Truesdell) . . . 110

Iron meteorites. kamacite andtaenite superstructures and ametastable tetragonal phasein (Ramsden, Cameron) 37

Isotropic sound velocities, anapproximate method forcomputing the, using refrac-tive index data (Anderson) 1001

Ito, J. with Frondel, C. 533-- Hendricksite, a new spe-

cies of mica. 1107Zincian aegirine-augite

and jeffersonite from Frank-lin, New Jersey. .

- and Hendricks, J. G. Bar-ium feldspars from Franklin,NewJersey. 1388

1406 Karamsinite ( : tremolite)

Jadeite, NaAlSi:O6, the crystalstructure of (Prewitt, Burn-ham). 956

Jahns, R. H. Presentation of the1965 Mineralogical Society ofAmerican award to Peter J.Wy l l ie . . 555

Jeffrey, G. A. with Guy, B. B. Thecrystal structure of fluellite,A ITPO F, (OH) '7HzO . . . . 1579

Jennite, a new mineral (CarPen-ter, Chalmers, Gard, Speak-m a n , T a y l o w ) . . . . 5 6

Kahn, J. S. with Newkirk, II. W.and Smith, D. K. Syntheticbromellite III. Some opticalproperties 141

and Smith. D. K. Min-eralogical investigations inthe debris of the Gnomeevent near Garlsbad. NewMexico. . . . 1192

Kamacite and taenite superstnrc-tures and a metastable tetra-gonal phase in iron meteo-rites (Ramsden, Cameron) 37

Correction (Ramsden,C a m e r o n ) . . . 1 5 4 4

Kaolinite, free energy of forma-tion of, from solubility meas-urements (Kittrick) 1457

Kaolinite-halloysite clays, min-eralogical studies of: Part IV.A platy mineral with struc-tural swelling and shrinkingcharacteristics (de SouzaSantos, de Souza Santos,Brindley). . . 16+0

Kaolinite-sodium carbonate sys-tem, inverted phase relationin the formation of nephelineand carnegieite from the(Kubo, Yamaguchi, Kasa-hara) 516

K a p u s t i n , Y u , I - . . . . 5 2 9_ (Book review) 942

(Vorma, Ojanperii). . 1552Kasahara, K. with Kubo, Y. and

Yamaguchi, G. Inverted

3 8 1

phase relation in the forma-tion of nepheline and carne-gieite from the system kaoli-nite-sodium carbonate. . .

Keester, K. L. with White, W. B.Optical absorption spectra ofiron in the rock-formingsilicates

Kehoe, T. J. with Fowler, L. J.and Eanes. R. D. (Book re-view)

INDEX TO VOLUME 51 1839

Synthetic pollucites in thesystem CszO .AlzOa .4SiOr

CszO' Fe:Or4SiO-HzO-theirphase relationship and physi-cal properties: A discussion . . 1243

Kostovite, a gold-copper telluridefrom Bulgaria (Terziev). . 29

Kracek, F. C., Ksanda, C. J. andCabri, L. J. Phase relationsin the silver-tellurium sys-t e m . . 1 4

Kramer, J, R. with Gulbrandsen,R. A. Beatty, L. B. and MaysR. E. Carbonate-bearingapatite from Faraday Town-ship, Ontario, Canada 819

Krishna, P. with Verma, A. R.(Book rev iew) . . . 1556

Ksanda, C. J. with Kracek, F. C.and Cabri, L, J. Phase rela-tions in the silver-telluriums y s t e m . . . . 1 , 4

Kubo, Y., Yamaguchi, G. andKasahara, K. Inverted phaserelation in the formation ofnepheline and carnegieitefrom the system kaolinite-sodium carbonate. 516

Kudo, A. with Bottinga, Y. andWeill, D. Some observationson oscillatory zoning andcrystallization of magmaticplagioclase. 792

Kurchatovite (Malinko, Lisitsyn,Dorofeeva, Ostravskaya,Shashkin). 1817

Kuznetsova, M. N. with Novi-kova, M. I. and Sidorenko,G. A . . . 1546

Kuznetsova, N. N. with Naza-rova, A. S. and Shaskin, D. P. l5+7

Labradorite, calcic, from LakeCounty, Oregon, physicalproperties of (Stewart,'Walker,

Wright, Fahey) 177Lamprophyres and mineral de-

posits. Petrology and min-eralogy of the Mount Rosaarea, El Passo and TellerCounties, Colorado (Gross,

5 1 6

774

945

1056

858

530

502r819

r457

539

949

1608

1035

875

o l l

1550

Keil, K. with Buseck, P. R.Meteoritic rutile. 1506

Kern, R. and Weisbrod, A. (Bookreview). . 536

Kerr, P. F. with Giiven, N. Se-lected Great Basin playaclays. .

Weathering effects on thestructures of mica-type clayminerals

Khomyakov, A. P. with Semenov,E. I. and Bykova, A. V. . .

King, R. H. Beryl in a Montanatac t i te body .

Kir i l lov, A. S..Kittrick, J. A. Free energy of

formation of kaolinite fromsolubility measurements. . .

Klassen-Neklyudova, M. V.Book review).

Klein, C., Jr. with Fuchs, L. H.and tr'rondel, C. Roedderite, anew mineral from the Indarchmeteorite.

Kleppa, O. J. with Holm, J. L. Thethermodynamic properties ofthe aluminum silicates.

Kodama. H The nature of thecomponent layers of rectorite

- with Brydon, J. E. The na-ture of aluminum hydroxide-montmorillonite complexes. .

Kohls, D. W. and Rodda, J. L.Gaspeite, (Ni, Mg, Fe) (COs),a new carbonate from theGasp6Peninsula, Quebec. . .

Kondrat'eva, V. V., Ostrovskaya,I. V. and Yarzhemskii, Y. Y.

Kopp, O. C. and Clark, G. W.

1 8+0

Heinr ich) . 1433

Landau, A. I . wi th Palatnik, L. S.(Book review) 1821

Landaui te (Portnov, Nikoiaeva,Stolyarova) . . 1546

Landy, R. A. wi th Hyde, C Whe-

wellite f ron-r septarian con-

cret ions near Mi lan, Ohio 228

Larnite, bredigite, and 7 dical-

cium silicates from Marble

Canyon (Bridge) 1766

Lavenite, orthorhombic (Portrov,

S i n o n o v , S i n y u g i n a ) . . . 1 5 4 9

Leucite in plutonic rocks, an ex-perimental study bearing on

the absence of (Scarfe, Luth,

Tut t le) . . . ,Levandowski, D. W. (Book re-

v iew)Levinson, A. A. A system of no-

menclature for rare-earth

minerals.

726

253

l J z

--- and Vian, R. W 'I-he

hy-

drothermal synthesis ofmo r r tmo r i l l on i t e g roup m in -

erals from kaolinite, quartz

and various carbonates 49.5

Levy, C. wi th Francot te, J. ,Moreau, J. and Ottenburgs,R . . . . 1 8 1 6

Lewis, R, R. and Senftle, F. E.

The source of ferromagne-

tism in zircon I+67

Linares, E. with Gordillo, C. E.,

Toubes, R. O. and Winchell,H. Huemulite, NarMgVroOzs. 24HzO, a new hydrous so-

dium and magnesium vana-

date from Huemul Mine,Mendoza Province, Argen-t ina. . 1

Lindsley, D. H. Mel t ing re lat ions

of KAISi:Og: effect of pres-

sures up to 40 kilobars 1793

Lisitsyr.r, A E. with \tlalinko,

S. V. , Dorofeeva, K A ,Ostravskaya, I. \t. andShashkin, D P. 1817

Loughnan, F. C. Analcite in theNewcastle coal measure sedi-

INDEX TO VOLUME 51

ments of the Sydney Basin'

Australia (Loughnan) 486

I-ugovskoi, G. P. with Gorzhev-

skay:1, $. A. and Sidorenko,

G . A . 1 5 5 1

Luth, W. C. with Peters, Tj. and

Tuttle, O. F. The melting of

analcite solid solutions in the

system NaAlSiOq-NaAlSi:O :-H,o 736

-- with Scarfe, C. M' and

Tuttle, O. F. An experimental

study bearing on the absence

of leuci te inplutonicrocks. 726

and Tuttle, O. F. The

alkali feldspar solvus in the

sys tem Na2O-K2O-A l2O3-

sior-Hro. 1359L-vall, K. D.

-fhe origin of mechan-

ical twinr.ring irr galena . . 2+3

Mackinarvite from the Witwaters-

rand conglomerates (Schid-

lowski , Ottemann) 1535

Magbasite (Semenov, Khom.va-

kov, Bykova) 530

Maksimova, N. V. with Semenov,

E. I , Gerassimovsky, V. I . ,

Andersen, S and Petersen,

o. v. 1547Malayai te(Alexander,Fl inter) 1551

Mal inko, S. V. , L is i tsyn, A. E. ,

Dorofeeva, K. A Ostrav-skaya, I . V. ard Shashkin,

D. P. 1817

N{arrdar ino, J. A. , Harr is , D. C.

a n d B r a d l e y , J . . . . . 5 3 3

Mandrikova, N. T. u'ith Oleini-

kov, B. V., Shvartsev, S. L.

and Oleinikova, N. N. 529

Manganese-bearing minerals of

Chemp io r r M i r r e , Chan rp io r r ,

Michigan (abs.) (Babcock). . 1560

Manganese nodules, electron-probe determination of inter-

e l emen t r e l a t i on .h i ps i n(Burns, Fuerster.rau) 89'5

Mariner. rko, J. wi th May, I . A

nricropycnometer for the de-

termination of the specific

gravity of minerals 931

INDEX TO

Mart in, R. - f

. (Book review). 1823Marurno. F. and Bur i . G. 532__and Nowacki , w. . 531Marvin, U. B. with Dodd, R. T.

Jr., and Van Schmus, W. R.Significance of iron-rich sili-cates in the Mezii-Madaraschondrite. . . 11.77

Mason, B. wi th Donnay, G. andIngamel ls, C. O. Buerger i te, anew species of tourmaline 198

\'l[atveev, G. M. with Babushkin,V. L and Mchedlov-Petro-

syan, O. P. (Book review) 251May, L and Mar inenko, J. A mi-

cropycnometer for the deter-m ina l i o r r o [ t he spec ihc g rav -

ity of minerals . . 931Mays, R. E. with Gulbrandsen,

R. A., Kramer, J. R. andBeatty, L. B. Carbonate-bearing apatite from Faraday

Township, Ontario, Canada . 819Mchedlov-Petrosyan, O. P with

Babushkin, V. I . andMatveev. G M. (Book re-

v iew) 251Nlead, C. ( Book revierv) 941Mechanical twinnirrg of crystals

( Klassen-Neklyudova) ( Bookreview). 539

Megaw, H. D. (Bool i review) 255

Melson, W. G. Phase equilibria inin calcsilicate hornfels. Lewisand Clark County, Montana. 402

- and Switzer, G. Plagio-clase-spinel-graphite xeno-liths in metallic iron-bearingbasalts, Disko Island, Green-land 664

Melt ing re lat ions of KAISLOs:effect of pressures up to 40ki lobars (L indsley) 1793

Mercy, E. L. P. with O'Hara,M. J. Eclogite, peridotite andpyrope from the Navajo

country, Arizona and Ne\MMexico. 336

Metamict minerals, Virginia: per-

rierite and chevkinite

VOLUA,IE 51 1841

(Mitchell). . . 139+Metastrengite, the crystal struc-

ture of, and its relationship tostrengite and phosphophyllite(Moore). .

Metazellerite and zellerite, newuranyl carbonates (Coleman,Ross, Meyrowitz). . 1567

Metzger, C. F. with Gaudette,H. E. and Grim, R. E. Illite:A model based on the sorp-tion behavior of cesium 16+9

Meyrowitz, R. with Coleman,R. G. and Ross, D. R. Zel-lerite and metazellerite, newuranyl carbonates 1567

with Young, E. J. andWeeks, A. D. Coconinoite' aneu/ uranium mineral fromU t a h a n d A r i z o n a . . . . . 6 5 1

Mica, glauconitic, lacustrine, fromPluvial Lake Mound, I-ynnand Terrl' Counties, Texas(Parry, Reeves) 229

Micas, dehydroxylated, electron-microscopic observation of(Nakahira, Uda) 454

Micropycnometer for the deter-mir.ration of the specific grav-ity of minerals (May, Mari-nenko) 931

Microscopic identification of min-erals (Heinrich) (Book re-view )

Mineral resources of Africa (de253

Kun) (Book review). 1557-- of South-central Africa

(Pel let ier) (Book review) . 1558

Mineralogical Society of America,

forty-six aunual meetir.rg, pro-

ceedings of, at Kansas City,Missouri (Switzer)

- Award, acceptance of the

1 9 6 5 , ( W y l l i e ) . . .--Award, presentatiorl of the

1965, to Peter J. Wyl l ie( J a h r r ' )

Mineralogy of the Black Hills(Roberts, Rapp) (Book re-

569

5 5 7

555

542view)

1842

Mineraly, spravochnik (Book re-view)

INDEX TO VOLUME 51

Mitchell, R. S. Virginia metamictminerals perrierite and chev-kinite

- - ( B o o k r e v i e w ) . . . . .Mizzonite, the crystal strucfure

of, a calcium- and carbonate-rich scapolite (Papike,Stephenson).

Moenke, H. (Book review).- and Moenke-Blankenburg,

L. (Book review).Moenke-Blankenburg, L. with

Moenke, H. (Book review)Moh, G. H. . .Montmorillonite clay, molecular

structure and pH effects onthe adsorption of 13 s-tri-azine compounds on (Weber)

exchange equilibria withstrontium-s o dium-c e sium(Eliason). . . .

group minerals, hydro-thermal synthesis of, fromkaolinite, quartz and variouscarbonates, the. .

Moore, P. B. Catoptrite andyeatmanite-stu.ffed pyro-chroite structures?. . . .

- The crystal structure ofmetastrengite and its rela-tionship to strengite andphosphophyllite 168

- Reply to Prof . D. J. Fisher 939Moreau, J. with Francotte, J.,

Ottenburgs, R. and Levy, C.. 1816M o r g a n , F . . . . . . 5 3 3Mortland, M. M. with Raman,

K. V. External specific sur-face area of vermiculite . . 1787

Mount Rosa area, El Paso andTeller Counties, Colorado,petrology and mineralogy ofthe III. Lamprophyres andmineral deposits (Gross,Heinrich). 1433

El Paso and Teller Coun-ties, Colorado, petrology andmineralogy of the, II. Pegma-

tites (Gross, Heinrich) 299Mowatt, T. C. with Hower, J. The

mineralogy of illites andmixed-layer illite/montmoril-lonites 825

Moyd, L. Michipicoten scheelitedeposit near MichipicotenHarbour, Ontario (abs.). 1562

Maun, A. and Osborn, E. F. (Bookreview). 248

Mumme, W. G. and Scott, T. R.The relationship betweenbasic ferric sulfate and plum-bojarosite. . . +43

Mumpton, F. A, with Hostetler,P. B., Coleman, R. G. andEvans, B. W. Brucite in Al-pineserpentinites.. 75

Munson, E. L. with Young, E. J.Fluor-chloroxy-apatite andsphene from Crystal Lodepegmatite, near Eagle, Colo-r a d o . . . . . 1 4 7 6

and Sheridan, D. M. Man-ganese- and strontium-bear-ir'rg fluorapatite from thePeerless pegmatite, SouthDakota . l J l o

Murdoch, J. and Ingram, B. L. Acerian vesuvianite from Cali-fornia

Muscovite, barium-vanadium,and vanadium tourmalinefrom Mariposa County, Cali-fornia (Snetsinger). 1623

in sillimanite-bearingmeta-pelites of northwesternMaine, variations of the basalspac ingsof (Gu ido t t i ) . . . 1778

- upper stability of (Velde) . 924Myrmekite in charnockite from

South-West Nigeria (Hub-bard) . . . . 762

Nakahira, M. and Uda, M. Elec-tron-microscopic observationof dehydroxylated micas 454

- with Yamamoto, T. Am-m o n i u m i o n s i n s e r i c i t e s . . . . . 1 7 7 5

Naumann, A, W. and Dresher,W. H. The influence of sam-

256

13941556

1 0 1 4540

1822

1822155 1

1657

324

495

t+94381

INDEX TO

ple texture on chrysotile de-hydroxylation, 1200

- The morphology of chryso-tile asbestos as inferred fromni t rogenadsorp t iondata . . . . . 711

Nazarova, A. S., Kuznetsova,N. N. and Shaskin, D. P.. . 1547

Nekrasov, l Y. with Grigoriev,A . P . . . . . . . . 1 8 1 8

with Grigoriev, A. P. andBrovkin, A. A. 1818

New Mineral Names (Fleischer)529, 1546, 1 8 l 5

Newkirk, H. W., Smith, D. K. andKahn, J. S. Synthetic bromel-lite III. Some optical proper-t ies. . 141

Nickel-iron content of peridotiteinclusion and cognate olivinefrom an alkali-olivine basalt(Forbes, Banno). 130

Nickelhexahydrite (Oleinikov,Shvartsev, Mandrikova,O l e i n i k o v a ) . . . . . 5 2 9

Nikitina, I. B. with Ostrovskaya,J. V. and Pertsev, N. N. . 1817, 1820

Nikolaeva, L. E. with Portnov,A. M. and Stolyarova, T. I . .

Novikova, M. I., Sidorenko, G. A.and Kuznetsova, M. N..

Nowack i , W . .with Burri, G. and

Marumo , F . . . 531Nowack i i t e (Ma rumo ,Bu r r i ) . . . . 532Nul f ie ld, E. W. and Harr is , D. C. .

5 3 2 , 5 3 3O f t e d a l , L . . . 5 3 4OtIIara, M. J. and Mercy, E. L. P.

Eclogite, peridotite andpyrope from the Navajocountry, Arizona and NewM e x i c o . . . . . . 3 3 6

Ojanperi, P. with Vorma, A. 1552Oleinikov, B. V., Shvartsev, S. L.,

Mandrikova, N. T. ardOlein ikova, N. N. . . . 529

Oleinikova, N. N. with Oleinikov,B. V., Shvartsev, S. L. andMandrikova, N. T.. . . 529

Oosterbosch, R. with Cesbron, F.

VOLUME 51 1 843

and Bachet , B . . 1815Optical absorption spectra of iron

in the rock-forming silicates(White, Keester).. . 77+

Optical properties of minerals. Adeterminative table. (Win-chell) (Book review). . 542

Optische Bestimmungsverfahrenund Gerite fiir Mineralogenund Chemiker (Moenke,Moenke-Blankenburg) ( Bookreview). 1822

Orthopyroxene, disordered, inmeteorites (Pollack) 1722

Osborn, tr. F. with Muan, A.(Book review) 248

Oscillatory zoning and crystalliza-tion of magmatic plagioclase,some observations on (Bot-t inga,Kudo,\Meil l ) . . . 792

Osmer, J. A. with Chase, A. B.Growth of single crystals ofZrOzand HfOz from PbF:. . . 1808

Ostrovskaya, I. V. with Kon-drat'eva, V. V. and Yarzhem-s k i i , Y . Y . . . . . . 1 5 5 0

- with Malinko, S. V.,1546 Lisitsyn, A. E., Dorofeeva,

K. A. and Shashkin, D. P. . . . l8l71546 Pertsev, N. N. and532 Nikitina, I. B. . 1817, 1820

Ottemann, J. with Schidlowski,M. Mackinawite from theWitwatersrand conglomer-a tes . 1535

Ottemanni te,berndt i te(Moh). 1551

Ottenburgs, R. with Francotte, J.,Moreau, J. and Levy, C. . 1816

Oxydischen Kristallphasen deranorganischen I ndustrie-Pro-

dukte (Trojer) (Book re-review).

Pabst, A. Acceptance of theR o e b l i r r g m e d a l . . .

- (Book rev i ew) . . . .Palatn ik, L. S. and Landau, A. I .

(Book rev i ew) . . .Papike, J. J. and Stephenson,

N. C. The crystal structure ofmizzorrite, a calcium- and

248

552538

r82l

I 844

carbonate-rich scapolite. 1014Parry, W.

'I'. and l{eeves, C. C.,

Jr . Lacustr ine glauconi t ic

mica from Pluvial LakeMound, Lynn and TerryCounties, Texas 229

Peacor, D. R. (Bookreview) 248,255Pear l , R N{. (Book review). . . 543

Pegmatites. Petrology and min-

eralogy of the Mount Rosa

area, El Paso and TellerCounties. Colorado. III(Gross, Heinrich) 299

Pel let ier , R. A ( Book review) 1558

Peng, T. and Chang, C. 1549

Peridotite and pyrope, eclogite,from the Navajo country,Arizona and New Mexico(OtHara, Mercy). 336

Peridotite inclusion, nickel-iron

content of, and cognate oli-

vine from an alkali-olivinebasalt (Forbes, Banno) 130

Permingeat, F with Gaudefroy,

C., Dietr ich, J. and Picot , P. 1819

Perrierite and chevkinite, Virginiametamict minerals (Mitchell) 1394

Pertsev, N. N. with Ostrovskaya,I . V . a r rd N i k i t i na , I . B . . 1817 , 1820

Peters, Tj., Luth, W. C. and

Tuttle, O. F. The melting of

analcite solid solutions in the

system NaAlSiO+-NaAlSLOs-H,o 736

Petersen, O. V. Crossed axialp lane dispersion in epid idy-mlte 916

with Semenov, E I . ,

Gerassimovskl ' , V. I , Maksi-

mova, N. V. and Andersen, S 1547

Phase equilibria among oxides in

steelmaking (N{uzrn, Osborn)(Book review) . 248

- in mul t iconrpotrent sys-tems (Palatnik, Landau)(Book review) 1821'

Phases of silica (Sosman) (Book

review). 538

Phosphate, magnesilrm, mineral

replacement at Mono Lake,

INDEX T-O VOLUA,[E 51

California (Cohen, Ribbee). . 1755

Physical properties of diamond( B e r m a n ) ( B o o k r e v i e w ) . . . 9 4 1

Picot, P. with Gaudefroy, C.

Dietr ich, J. and Permingeat,

F . 1 8 1 9

Plagioclase feldspar from a ba-

saltic lava flow, composi-

tional variations of (Hoffer) 807- magmatic, some observa-

tions on oscillatory zoning

and crystallization of (Bot-

tinga, Kudo,'W'eill) 792- -spinel-graphite xenoliths

in metallic iron-bearing ba-

salts, Disko Island, Green-

land (Melson, Switzer) 664

Plastic peel techniques, applica-

tion of, to the study of silicate

rocks (Barker) 1541

Plumbojarosite and basic ferric

sulfate, the relationshiP be-

tween (Mumme, Scott). . . 1+3

Pollack, S. S. Disordered ortho-

pyroxene in meteorites 1722

Pollucites, synthetic, in the sys-

tem Cs2O'Al2O3.4SiO2-FerOr.4SiOr-Hro-their phase re-

lationship and physical proP-

ert ies: A discussion (Kopp,

Clark) 1243

Po l ymorph i sm and po l l ' t yp i sn r i r r

crystals (Verma, Krishna)(Book review) 1556

Polyhalite, diagenetic, in Recent

salt from Baja California(Holser) . 99

Portnov, A. M., Nikolaevzr, L. E.

Stolyarova, T. I. 1546___Simonov, v. l. and

S i n y u g i n a , G . P . 1 5 4 9

Povarerrnykh, A. S. 1551

Preston, J. An uul tsual hourglass

s t ruc l u re i r r aug i t e 1227

Prewitt, C. T. and Burnham,

C. W. The crystal structure ofjadeite, NaAlSizOo 956

Principles of structural glaciology(Shumski i ) (Book review) . . 94+

Pyrite in conventional differential

INDEX TO

rhe rma l a r r e l y t i s equ ipmen t ,a note on the examination of(Cole, Crook) 199

Pyromorphite series, an r-raydiffraction study of slmtheticmembers of the, (Baker) l712

Pyroxene, synthetic, CaAlrSiOe,stability and properties of the(Hays) 1521

Pyrrhotite, rnixtnres of hexagor.raland monocl i r ic , and themeasrlrernent of the nerarcontent of pyrrhotite by r-ra1'd i f f r ac t i on (A rno ld ) . . . 1221

Quantitertive electrorr microprobe

analysis ( ' fheisen) (Book re-review) 941

Quartz,, blue synthetic (\\rood,

Balhnan) 216natural , b lackening c. f b1 '

7- i r radiat ion, (Ri t ter , Den-nen ) 220

lladusinovic, D. I{. Creigite fron-rthe Lo.jane chromiun de-posit, ll:rcedonia 2A9

Rarr-ran, K V. and Mortlzrnd,M. NI. Exteflral specilic sur-face area of vermiculite 1787

Ramsden, A. R. and Cameron,E. N. Kamacite and taenitesuperstructures and a meta-stable tetragonal phase iniron meteorites 37

"I{amacite and taenitesl lperstructures arrd a meta-stable tetragoral phase ini ron meteor i tes." Correct ion. 1544

Rare-earth minerals, a system ofnomenclature for, (Levinson) 152

Reeves, C. C. , Jr . wi th Parry,W. T. Lacustrine glaucor-ritic

mica from Pluvial l,erkeMound, Lynr.r and TerryCount ies, l -exas 229

Rectorite, the nature of the com-ponent layers of (Kodama) 1035

Research on the nature of min-eral-forming solutions (Yer-

makov el a l (Book revierv) . 1555Relmolds, R. C. with Anderson,

VOLUME 51 1845

D. M. Umiat bentonite: anunusual montmorillonite

from Umiat, Alaska l++3

Rhodiz i te (Frondel , I to) 533

Ribbe, P. H. with Cohen, L. W.Magnesium phosphate min-

eral replacement at MonoLake, California 1755

Rinkite, l-ray cr-vstallography of(Gottardi) 1529

Rit ter , C. J and Dennen, \ \ ' - . H.

Blackening of natrrral quartz

by 7- i r radiat ion. 220

Roberts, W. I- and Rapp, G., Jr.(Book review)

I{obinson, P. D Use of the bi-

nucular microscu;e for or ie l t -tat iorr of s ingle crystals.

- - - Fang, J. H. and Bloss,

F. D. Cel l d imensions and

space g ru r rp o f l a t na r t t g i t e . .

Rock forming ninerals, Vol . 5,

non-si l icer tes (Deer, Howie,

Zussman) (Book review)

Rodda, J. L. with Kohls, D. W.

Gaspeite, (Ni, Mg, Fe) (COs),

a new carbonate from the

Gasp6 Peninsula, Quebec . .

Roebling Medal, acceptatrce of(Pabst)

presentation of, to Adolf

Pabst (Campbel l )

Roebl ingi te, new data on (Foi t ) . .

Roedderite, a new mineral from

the Indarch meteorite(Fuchs, Frondel , Kle in)

Ross, D. R. with Coleman, R. G.

and Meyrowitz, R. Zellerite

and metazellerite, new uranylcarbonates

Rutile, meteoritic (Buseck, Keil)

Ryall, W. R.. and Threadgold,I. M. Evidence for [(SiO:);]-type chains in inesite as

shown by x-ray and infrared

absorpl ionstudies . . 754

Sakhaite (Ostrovskaya, Pertsev,

Nik i t ina). . l8 l7

Samiresite (Gorzhevskal,a, Lu-govskoi , Sidorenko) 1551

5+2

1243

1 805

1555

o l I

552

548504

949

15671506

1846 INDEX TO VOLUME

Saukovi te (Vasi l iev) . 1818Scarfe, C. M., Luth, W. C. and

Tuttle, O. F. An experimentalstudy bearing on the absenceof leucite in plutonic rocks. 726

Schaller, W. T. with Foster, M. D.

Cause of colors in waveliitefrom Dug Hill, Arkansas. . . 422

Scheelite deposit, Michipicoten,near Michipicoten Harbour,Ontar io (Moyd) (abs.) . . 1562

Schidlowski, lI. and Ottemann,

J. Mackinawite from theWitwatersrand conglomer-a tes . 1535

Schroeckingerite from AmbrosiaLake uraniurn district (Barc-

zak) 929Scott, T. R. with Mumme, W. G.

The relationship betweenbasic ferric sulfate andplumbojarosite 4+3

Sedovite (Skvortsova, Sidorenko) 530Semenov, E. I., Gerassirnovsky,

V. I . , Maksimova, N. V. ,Andersen, S. and Petersen,o. v. 1547

Khoml'akov, A. P' andB1'kova, A. V. 530

Senftle, F. E, with Lewis, R. R.The source of ferromagne-tism in zircon t467

Ser ic i tes , a rnmorr i t rm io r rs i r r(Yamanroto, Nakahira). 1775

Serpentinites, Alpine, brucite in(Hostetler, Coleman, Mump-ton, Evans) 75

Serpentinization considered as aconstant-volume metasomat-ic process (Thayer). 685

Shappirio, J. R. with Heinrich,E. Wm. Alkalic rocks andcarbonatites of the ArkansasRiver Canyon, FremontCounty, Colorado. 3, TheAmethyst carbonatites. 1088

Shashkin, D. P. with Malinko,S. V., Lisi tsyn, A. E., Doro-feeva, K. A. and Ostrav-skava. I . V.. . 1817

with -\azarova, A. S. andKuznets<.rva, N. N. L547

Shel l , H. R. wi th Cl i f ton, R. A. Jr .and Huggins, C. W. Hollow

chrysotile fibers 508

Sheppard, R. A. wi th Gude, A. J.Silica-rich chabazite from the

Barstow formation, San Ber-

nardino County, Southern

California 909

Sher idan, D. M. wi th Young, E Jand Munson, E. L. Man-ganese- and strontium-bear-ing fluorapatite from thePeerless pegmatite, South

Dakota 1516

Shirozu, H. and Bailey, S. W.Crystal structure of a two-

layer Mg-vermiculite. . II24

Shi tov, V. A. wi th Buryanova,

E. Z. and Strokova, G. S. . 1548

Shtrmskii, P. A. (Book revierv) 944

Shvartsev, S. L. with Oleinikov,B. \r., Mandrikova, N

-f. and

Oleir ikova, N. N. . . . 529

Sidorenko, G. A with Gorzhev-

skaya, S. A. and Lugovskoi ,

G . P . 1551

with Novikova, M. L and

Kuznetsova, M. N. 1546- with Skvortsova, K. V. 530

Silicates, iron-rich, significance of,in the Mezii-Madaras chon-drite (Dodd, Jr., Van

Schmus, Marvin) . 1177

nickel-magnesium, hy-

drous the, garnierite group(Faust) . 279

Silver-tellurium system, phase

relations in the (Kracek,

Ksanda, Cabr i ) . 14

Silverman, S. R. with Spotts,

J. H. Organic dolomite from

Point Fermin, California 1144

Simonov, V. I. with Portnov,A. NI . and Sinyugina, G. P. . . 1549

Simpsor.r, D. R. Effects of magne-sium on the fon-nation of

a p a t i t e . . . . . . . 2 0 5

Sinyugina, G. P. r'ith Portnov,

A. M. and Simonov, V. L 1549Skatulla, W. with Vogel, W.

(Book review) 2+9Skvortsova, K. V. and Sidorenko,

G. A . . . 530Smith, D. K. with Kahn, J. S.

Mineralogical investigationsin the debris of the Gnomeevent near Carlsbad, NewMexico. 1192

with Newkirk, H. W. andKahn, J. S. Synthetic bromel-lite III. Some optical proper-t ies . . . . 141

Smith, F. G. (Book review) 535Snetsinger, K. G. Barium-vana-

diummuscovite and vanadiumtourmaline from MariposaCounty, California 1623

Soboleva, L. N. with Bezsmert-n a y a , M . S . . . . . 5 3 1

Siihngeite (Strunz). 1815Solutions, minerals, and equilibria

(Garrels, Christ) (Book re-view) 5J5

Sorensenite (Semenov, Geras-simovsky, Maksimova An-dersen. Petersen) 1547

Sosman, R. B. (Book review). 538Speakman, K. with Carpenter,

A. B., Chalmers, R. A., Gard,J. A. and Taylor, H. F. W.Jennite, a new mineral. . 56

Spektralarlalyse von Mineralienund Gesteinerr ( Moenke)(Book review) 540

Spinel, magnesium, an n-raymethod for definirrg composi-tion of a (Allen) 239

Spotts, J. H. and Silverman, S. R.Organic dolomite from PointFermin, California. 1144

Stephenson, N. C. with Papike,J. J. The crystal structure ofmizzonite, a calcium- andcarbonate-rich scapolite .. 1014

Stewart, D. 8., Walker, G. W.,Wright, T. L., and Fahey,J. J. Physical properties ofcalcic labradorite from Lake

(Book rev i ew) . . .

Strunz, H.

INDEX TO VOLUME 51 t847

County,Oregon. . . 177

Stolyarova, T. I. with Portnov,

A. M. and Nikolaeva, L. E. . . 1546

Strokova, G. S. with Buryanova,

E. Z. and, Shitov, V. A. . . . 1548

Structural and tectonic principles

(Badgley) (Book review), . 943

Struktur und Kristallisation der

Gliser (Vogel, Skatulla)2+9

1815Stumpfl, E. F. and Clark, A. M.. . 1551Sulfate, basic ferric, and plumbo-

jarosite, the relationship be-tween(Mumme,Scott). . . . +43

Sulvanite, refinement of the struc-ture of (Trojer). . . 890

Svyazhin, N. V.. . 1819Swineford, A. (Book review). . . 1556Switzer, G. Proceedings of the

forty-sixth annual meeting ofthe Mineralogical Society ofAmerica at Kansas Citv,Missouri. . . 569

with Melson, W. G. Pla-gioclase-spinel-graphite xeno-liths in metallic iron-bearingbasalts, Disko Island, Green-land 664

Taenite superstructures a-nd kam-acite, and a metastable tet-ragonal phase in iron meteor-ites (Ramsden, Cameron). . . 37

Tamarugite, cell dimensions andspace group of (Robinson,Fang, Bloss) 1805

Tarbuttite and paradamite, theu n i t c e l l o f ( F i n n e y ) . . . . 1 2 1 8

Taylor, H. F. W. with Carpenter'A. 8., Chalmers, R. A.' Gard'

J. A. and Speakman, K.

Jennite, anewmineral 56Temple, A. K. Zoisite-rutile rock

from Los Angeles CountY,Ca l i fo rn ia . . . . . . 1028

Termodinamika Silikatov (B.-bushkin, Matveev, Mched-lov-Petrosyan) (Book re-v i e w ) . . . . . 2 5 1

Terziev, G. Kostovite, a gold-

1848 INDEX TO VOLUXIE

copper telluride from Bul-gaia. . 29

Thayer, T. P. Serpentinizationconsidered as a constant-volume metasomatic process. 685

Theisen. R. (Bookreview) 941Therrnal methods of analysis

(Wendlandt) (Book review) 538Thermodynamique de base pour

min6ralogists p6trographes etg6ologues (Kern, Weisbrod)(Book review). 536

Thermoluminescence of calcitefrom high gamma radiationdoses (Vaz, Zeller). . . 1156

Threadgold, I. M. with Ryall,\V. R. Eviderrce for [ (SiOr) ; ] -type chains in inesite asshown by *-ray and ir.rfraredabsorpt ion studies 754

Ti tar . r ium oxides A*(B. .Tig-")O'e,comrlex alkal i . of the,r-MnOzstructure-type (Ba1'e1, 11o61-m a n ) 5 1 1

Titanomagnetites, phenocrysticspineliferous, from trachl'-andesi tes, Ik i Is land, Japan(Aoki) t799

Tobermorite, hydrothermally-synthesized, effects of iso-morphous substitution in(Diamond, White, Dolch) 388

Toubes, R. O. with Gordillo, C. E.'Winchell,

H. and Linares, E.

Huemulite, Na+MgVruOzs.24H2O, a new hydrous so-dium and magnesium vana-date from Huemul Mine,Mendoza Province, Argen-tina. I

Tourmaline, ferric iron, nelv typeof (Frondel, Biedl, Ito) 1501

vanadium and barium-vanadium muscovite fromMariposa County, California(Snetsinger) 1623

Trojer, tr'. J. Refinement of thestructure of sulvanite 890

( B o o k r e v i e w ) . . . . 2 4 8Truesdell, A. H. Ion-exchange

constants of natural glasses

by the electrode method 110

Tuttle, O. F. with Luth, 'W.

C.

The alkali feldspar solvus in

the system NarO-K:O-AlzO:-

sio:-Hzo 1359

with Peters, Tj, and Luth,

W. C. The melting of analcite

solid solutions in the system

NaAlSiOq-NaAlSLOS-H,O 736

with Scarfe, C. M. and

Luth, W. C. An experimental

study bearing on the absence

of leucite in plutonic rocks 726

Uda, M. with Nakahira, M. Elec-

tronmicroscopic observation

of dehydroxylated micas . 454

Unnarned (Harris, Nuffield) 533

Llnnamed Ca analogue of paler-

moi te (von Knorr ing) 1819

Unnamed minerals, trvo (NIan-

dar ino, Harr is , Bradley) 533

Unnamed ruthenium sulhde(Stumpf l , Clark) 1551

Van Schmus, W. R. with Dodd'

R, T., Jr., and Marvin, U. B.

Significance of iron-rich sili-

cates in the Mezii-Mandaras

chondrite . . 1177

Vanuranylite (Burl':rnova, Stro-

kova, Shitov)

Vasi l iev, V. I . . . .

Yaz, J. E. and ZelIer, E. J. Ther-

moluminescence of calcite

from high gamma radiation

doses

Velde, B. lJpper stability of mus-

covi te. . .

Verma, A. Il. and Krishna, P.

15481818

I 156

924

(Book review). 1556

Vermiculite, Mg-crystal structure

of a two-layer (Shirozu,

Bai ley) . . 1124

external specific surface

a rea o f (Ram: r r r , Mo r t l a r r d l . 1787

Vesuvianite from California, a

cerian (Murdoch, Ingram) 381

Vian, R. W. with Heinrich, E.

Wm. A barite-quartz phase in

the Firesand River carbor.r-

INDEX TO

atite, Wawa, Ontario (abs.) 1562with Levinson, A. A. The

hydrothermal synthesis ofr n n n l m o r i l l o n i t e g r o r r p m i n -erals from kaolinite, quartz

and various carbonates 495Viswanathan, K. Unit cell dimen-

sions and ionic substitutionsin common clinopyroxenes 429

Vogel , W. and Skatul la, W. (Bookreview) 249

Volkovskite ( Kondrat'eva, Os-trovsl<aya, Yarzhemski i ) . . 1550

Volynskite (Bezsrnertnaya, Sobo-leva)

von Klorr ing, O.Vorma, A. and Hoffren, V- and Ojanper i i , P.Wairakite aud analcime, cation

exchange properties of (Ames)

Walker, G. W. with Stewart,D. B. Wright, T. L. andFahey, J. J. Physical prop-

erties of calcic labradoritefrom Lake County, Oregon

\\rallisite ( \oivacki)Waring, G. A. u'-ith White, D. E.

and Hen, J. D. (Book re-

VOLUME 51 1849

plagioclase. 792Weisbrod, A. with Kern, R. (Book

review). . . 536

Wel ls, F. G. and Hawkes, H. E.(Book review) 1558

Wel ls, R. G. (Book review). . . 248

Wendlandt, \V. W. (Book review) 538\Vhewellite from septarian con-

cretions near NIilan, Ohio( H y d e , L a n d y ) . . . 2 2 8

White, D. E. , Hen.r , J . D. and\\hring, G. A. (Bool< review). 1821

White, J. L. with Diamond, S. andDolch, W'. L. Effects of iso-morphous substitution in hy-drothermally-synthesized to-

bermorite . . 388

White, W. B. and Keester, K, L.

Optical absorption spectra of

iron in the rock-forming sili-ca tes . 774

Williams, S A. The significance ofhabit and morphology of wul-fenite

Winchel l , H. (Book review)

5 3 11 8 1 9I 5s3t552

903

1,2725+2

532

vier,v) l82lWarkentin, B. P with Yong,

R. N. (Bool< review). 1823Wavellite, cause of colors in, from

Dug Hill, Arkansas (Foster,

Schaller) 422'Weber,

J. B. Molecular structureand pH effects on the adsorp-tion of 13 s-triazine com-pounds on montmorilloniteclay. 1657

Weber, J N Dehl.dration of dia-spore al waler pressures f rom15 t o 15 ,000 ps i . 235

Weeks, A. D. with Young, E. J.and Meyrowitz, R. Cocon-inoite, a new uranium min-eral from Utah and Arizona.. 651

Weill, D. with Bottinga, Y. andKudo, Y. Some observationson oscillatory zoning andcrystallization of magmatic

with Gordillo, C. E.,

Linares, E. and Toubes, R. O.

Huemulite, Na"MgVrOu s.24H2O, a new hydrous so-dium and magnesium vana-date from Huemul Mine,Mendoza Province, Argen-

t ina. . 1

Wood, D. L. and Bal lman, A. A.

Blue synthet ic quartz 216

Wright, H. G. Detennination ofindicatrix orientation and 2V

with the spindle stage: acautiorr and a test. 919

Wright, T. L. with Stewart, D. B.

Walker, G. W', and Fahey,

J. J. Physical properties ofcalcic labradorite from Lake

County, Oregon. 177

Wulfenite, significance of habit

and morphology of (Wil-

l iams) . 1 2 1 2Wyllie, P. J. Acceptance of the

1965 Mineralogical Society ofAmerica award. . 557

1850 INDEX TO VOLUME 51

X-ra1' diffractometer specimens,sample cups and a techniquefor sideward packing of (Bry-

str<irn-Asklund) 1233

Yagi, K. The system acmite-diop-side anrl its bearing on the

stability relations of naturalpyroxenes of the acmite-hedenbergite-diopside ser-i es . 976

Yamaguchi, G. with Kubo, Y. andKasahara, K. Inverted phase

relation in the formation ofnepheline and carnegieitefrom the system kaolinite-sod iumca rbona te . . . 516

Yamamoto, T. and Nakahira, M.

Ammonium ions in sericites . 177 5

Yaroslavite (Novikova. Sido-renko. Kuznetsova) 1546

Yarzhemskii, Y. Y. with Kon-

drat'eva, V. V. and Os-trovskaya, I. V. 1550

Yeatmanite and catoprite-stuffed pyrochroite struc-t u r e s ? ( M o o r e ) . . . . . 1 + 9 +

Yermakov. N. P. et al (Book re-v iew) . 1555

Yoder, H. S., Jr. with Fawcett,J. J. Phase relationships ofchlorites in the system MgO-A l r o 3 - s i o r - H r o . . . . 3 5 3

Yong, R. N. and Warker.rt in, B. P.(Book review) . 1823

Young, E. J. and Munson, E. L.Fluor-chlor-oxy-apatite andsphene from Crystal Lodepegmatite, near Eagle, Colo-rado l+76

- sheridan, D. M. andMunson, E L. Manganese-and strontium-bearing fluor-apatite from the Peerlesspegmatite, South Dakota 1516

- Weeks, A. D. and Meyro-\tritz, R. Coconinoite, a newuranium mineral from Utahand Arizona 651

ZelIer, E. J. with Yaz, J. E.Thermoluminescence of cal-cite from high gamma radia-tion doses 1156

Zelleite and metazellerite, newuranyl carbonates (Coleman,Ross, Meyrowitz). 1567

Zies, E. G. A new analysis of cos-syrite from the island ofPantelleria . 2O0

Zimlr'er, P. W. A unique inter-growth of calcite and pyrite(abs . ) 1563

Zirconium minerals, t-ray spec-trographic determination ofhafnium-zirconium ratio in(Abdel-Gawad) 464

Zircosulfate (Kapustin). . 529Zoisite-rutile rock from Los An-

geles County, California(Temple) 1028

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ZrOz and HfO2, growth of singlecrystals of from PbF: (Chase,Osmer) 1808

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