s .s. - alaska
TRANSCRIPT
Grade and Tonnage Data Used t o Construct
Models f o r t h e Regional Alaskan Mineral Resources
Assessment Program
D.A. S inger , W . D , Menzie, 3 .H. DeYoung, Jr . ,
M. ~ a n d e r L 1 , a n d A . Lo t t
1/ Stanford Univers i ty , S tanford , Ca l i fo rn i a 94305 -
pmpE;R' 2' g:!t' U . S. Geological Survey & I SF.,,:. ~4 Y'
F? - I . I * 2 Open-f j 1 e Report 80-.799 s*g)$ly% d l ? A L i : X- .
wyps;Q&? (4 ET QEaLeCICWI. B U i W E I
T h i s r e p o r t i s pre l iminary and has n o t been ed i t ed o r r e v i e w e d f o r conformity w i t h U.S. Geological Survey stan- dards and nomenclature.
Introduction
In ea r ly 1973, t he U.S. Geological Survey published four regional
s t ud i e s (U .S .G .S. Open-file Reports 78-1A t o E ) describing the metal 1 i-
ferous mineral resource potent ia l of 80 percent of t he S t a t e of Alaska.
These s tud ies were pa r t o f the Regional Alaskan Mineral Resource Assess-
ment Program (RAMRAP). Basic s teps in these repor ts included del inea-
t i on of areas favorable o r permissive f o r various types of mineral de-
posits, est imation o f the number of deposits o f each type w i t h i n each. \
dcl i n ~ a t e d area where poss ib le , and f o r 11 deposi t types, construction
of grade-tonnage o r contained metal models. Because o f space and tirne
1 imi ta t ions , documentation o f the ' c r i t e r i a f o r the se lect ion of deposits
used i n the grade-tonnage models, grade and tonnage values, sources o f
information, and l i n ~ i t a t i o n s of the grade and tonnage values were not
included i n the repor ts ; this paper meets these needs.
Tonnages and average grades o f incompletely explored deposi ts are
seldom well known and, of course, a r e not known f o r unfound deposits.
Variat ion of grades and tonnages of we1 1-explored deposits is qui te large
b u t much of this var ia t ion i s due t o d i f ferences i n deposit types. W i t h -
i n spec i f i ed deposi t types t he var ia t ion can be much l e s s and can be
represented by frequency des t r ibu t ions of g rade and tonnage f o r well-
e;:plored deposi ts of each type. Frequency d i s t r i bu t i ons o f th is type
were used i n t he mineral resource repor ts of Alaska a s models of ton-.
nages and average grades o f the yet-to-be discovered and incompletely ex-
plored deposi ts . T h u s the asse r t ion t h a t an area i s geologically f-avor-
ab le f o r the occurrence o f a specif ied type o f mineral deposit can be
fu r the r defined by quan t i t a t ive information about t h e qual i ty and quantity
o f mineral commodities contained i n such deposits.
Total tonnages and average grades for known deposits were calcu-
la ted on the basis of p a s t production plus estimated reserves o r , where
avai lable , estimated resources. These estimates, plus deposit names,
general locations, and data sources are l is ted i n this report i n tables
f o r each o f the depos i t types fo r which models were constructed (Tables
1-10). Preceding each table i s a short description of the c r i t e r i a used
t o c lass i fy the deposits. Data used i n the grade-tonnage o r contained-
metal models f o r the following deposit types a r e presented; podiform
chroni t e , porphyry copper, porphyry molybdenum, skarn tungsten, mercury,
nickel i n small i n t r u s i o n s , vein gold, mafic volcanogenic s u l f i d e , felsic
and intermediate volcanoyenic su l f ide , and skarn copper. Data sources , i
f o r each tab le a re 7isted separately a t the end. Location codes are
l i s t e d in Table 11. Revised grade-tonnage models are presented i n 'Cable
12. A discuss<on o f er rors t h a t can ex i s t i n t h i s type o f d a t a i s pro-
vided in the following section.
Data Errors
Because the grade-tonnage models a re supposed t o add irrforiiiation
about the mineral resource potential of an area, i t i s important t h a t
models of grades and tonnages be representative of those t h a t occur i n
the del i n e a t e d areas. The niodels may n o t be represent3 t i v e i f t he wrong
d e p o s i t type model is applied t o an area, o r i f the grsdes o r tonnages
used to construct the model are not r e p r e s e n t a t i v e o f t he depos i t type.
bJi th careful considerat ion of the geology a n d known depasits of a n area,
such as was the case in the mineral resource assessnients of Alaska, errors
due t o misspecification of deposit types tend t o be quite small. Errors
due t o non-representative grades o r tonnages can be a r e s u l t of the in-
co r r ec t values of properly c l a s s i f i e d d e p o s i t s o r of incorrect ly c l a s s i -
f ied deposi ts used i n the models.
A deposi t of one type can be placed w i t h a group o f depos i ts of
another type through a c l a s s i f i c a t i o n mistake. Combinations of h o s t and
associa ted rock types, conta ined metals , mineralogy, g2010gic se t t i ngs ,
and comparison with recognized mineral deposits of ezch type were used
t o i den t i f y deposi ts t h a t belonged t o the various deposit types. Mis-
takes i n c l a s s i f i c a t i o n can be a r e s u l t o f e r ro r s i n the geologic de-
scriptSon o f a deposit i n the l i t e r a t u r e o r i n our in te rpre ta t ion of the
geologic descr ipt ion. A few e r ro r s of both types probably exist i n the
data sets presented here. I t i s unl ikely , however, t h a t discovery and
correct ion of these e r r o r s would s i gn i f i c an t l y changz the grade.-tonnage
models used i n the resource assessments;
Errors re la ted t o incor rec t deposi ts used i n t h o nodels can a l so be
due t o unrecognized regional d i f ferences i n grades and/or tonnages with in
a mineral deposi t type. Regional d i f ferences i n grades and/or tonnages.
a r e knom t o e x i s t f o r porphyry copper deposits and for podiforrn chromite
deposits and may e x i s t but n o t be recognized f o r saxe o f t h e other d e p o s i t
types . Incorrect values can conie about i n several ways and may cause the
grade-tonnage model developed frointhe values t o not 52 rep resen ta t i ve of
the population of i n t e r e s t . A l though report ing e r ro r s e x i s t in the l i t e r -
a t u r e , gross e r ro r s a r e usually detected by p lo t t ing the data and by ex-
amining d a t a from several sources.
A f i n a l source of e r r o r i s due t o the e f f e c t s of economics on the
q u a l i t y of d a t a a v a i l a b l e . Grade and t o n n a g e s e s t i m a t e s are u s u a l l y based
on d r i l l i n g o f t h e d e p o s i t s . Because of the expense i n v o l v e d i n d r i l l i n g ,
mining c o n c e r n s commonly d r i l l enough h o l e s t o p rove o r disprove the
economic v i a b i l i t y of t h e mining t h e d e p o s i t . This p r o c e s s can l e a d t o a
tonnage , and i n some c a s e s a g r a d e e s t i m a t e t h a t i s b i a s e d w i t h r e s p e c t
t o t h e g r a d e and tonnage o f t h e m i n e r a l i z e d rock i n a d e p o s i t . Wi th in
i n d i v i d u a l d e p o s i t s , t onnage e s t i m a t e s t e n d t o be b i a s e d downword and
g r a d e estimates b i a s e d upward. A r e l a t e d problem is t h e t e n d e n c y o f
l o w e r g r a d e d e p o s i t s n o t t o be r e p o r t e d because t h e y may n o t be economic
t o mine a t the time they a r e e x p l o r e d . Ba lanc ing t h e s e b i a s e s t o some
e x t e n t i s the i n c l u s i o n of p a s t p r o d u c t i o n which, f o r o l d e r d e p a s i t s a t I
o r n e a r d e p l e t i o n , t e n d s t o r e d u c e t h e biases. For t h e more r e c e n t l y
d i s c o v e r e d and the l a r g e r t o n n a g e d e p o s i t s , d r i l l i n g and the r e s u l t a n t
e s t i m a t e s a r e o f t e n more comple te because mining c o n c e r n s at tempt t o de-
v e l o p long- range mine p l a n s now. I t i s a l s o more common i n recent yea r s
f o r governments and p r i v a t e i n d u s t r y t o r e p o r t grades and t o n n a g e e s t i -
ma tes of uneconomic d e p o s i t s .
Acknowledgments
The d a t a were o b t a i n e d f rom a v a r i e t y of s o u r c e s and many i n d i v i d u a l s
among them Paul Schruben, Gus Goudarz i , Maureen Johnson, and J o c e l y n
P e t e r s o n .
Podi form Chromi t e
Chromite deposi ts were c l a s s i f i e d a s podiforrn i f t h e i r form was
t h a t of l e n t i c u l a r or approximately tabular pods occuring i n i r regu la r
pe r ido t i t e masses o r peridoti te-gabbro complexes of the a lp ine type.
Data used f o r the RAMRAP podiform chromite model were a l l from Cali-
fo rn ia because of reported s i m i l a r i t i e s o f the California depos i ts t o
many i n Alaska and because of the exce l len t documentation of the Cali-
fo rn ia deposits. Reported grades should be used w i t h caution; they may
represent the shipped grade which had been concentrated o r t h e grade i n
place. A f e w of t he grades and tonnages from the l a rge r deposits re-
present the combination of several deposi ts from a d i s t r i c t . Reports
of mult iple grades from d i f f e r e n t p a r t s of a deposi t were handled by
recalculating the grades and tonnages t o - an average g r a d e f o r the t o t a l
tonnage.
Table 1.--Chromi t e Deposits from California
( d a t a sources 1 isted i n references)
Deposi t name Locat ion Grade Tonnage (County) (Pe rcen t (Ms t r i c tons)
crilo3)
Newinon Mine
A1 1 an (Johnson Lease)
Courtwright ( ~ a g g e t t Lease) Courtwright
Detert Ellis
Kremmel and F r o e l i c h
Wai t
A n t i - A x i s
A1 ameda
Amador
. . .do.. .
. ..do.. .
. . .do.. .
. . .do. . .
. . .do.. .
. . .do.. . Butte
B i g Bend B i g Pine Claim
Chr i s t a i n Place
Dickey and D r i s b a c h Prospect Green ridge
Hendricks No. 2
Lambert
Liberty Bond Claim
L i t t l e Hope
Mary Jane
North S t a r (Red Mtn)
Parkesor~
Pa rk ' s Ranch
P.U.P. (Zen i th )
Simmons
Stewart
Suzy Bell (Lucky Str ike)
Swayne
War Bond
War Eagl e and fili 1 Je r Depos i ts
. .do. . . .;:do..
. . .do.. .
... do.. .
. . .do.. .
. . .do.. .
... do.. .
. . . do . . .
. ..do.. .
. . .do.. .
... do.. .
... do.. .
... do.. .
. * .do.. .
... do . . .
... do . . .
... d o . . .
. . .do. . .
... do. . .
... d o . . .
Deposit Location Grade Tonnage (County) (percent (Metric tons)
Cr203 --
Gillan Cal averas 3 3 1.4 x lo2
Fields and Stoker ... do . . . 4 3 2.12 x 10 2
... do. .. 3 8 5.0 x lo2 rl
Bowie Estate . . .do.. . 37 4.0 x loL
American Asbestos Co. .. .do.. . 3 5 1.0 x 10 2
Clary and Langford ... do.. . 46 3.48 x lo2
Holbrook and McGuire . . . d o - . . 4 7 8.5 x 10 2
Liberty
Madrid
Mayf l ower
Maxwell
Valenti
Vogel gzsang
Walker
Ward and Lyons Alyce and Blue Jay Claims
Apex
' Big Dipper (Robr)
Bonanza
Chrome H i 1 1 No 1
Coon M t . Nos. 1-3
Copper Creek (Low divide)
Fourth of July
French Hill
... do.. . 32 1.4 x 10 3
. . .do.. .
... do. . .
. . .do. . .
. . .do.. . Del Iblorte
. . .do.. .
. . .do.. .
... do.. .
. . .do.. .
. . .do.. .
. . .do. . .
. . . do* . .
. , .do. . .
. . .do.. . High Dome ; . . do . . . 45 2.95 x lo2
High Pla teau . . . do . . . 53 1.5 x I0 4
Judy (H icks) ... d o . . . 44 3.85 x 10 2
Fluzzl el oader (Stevens t\lo. 1) ... do.. . 50 1.69 x lo2
Lone Gravel . . . do . . . 4 2 2.8 x 10 2
b l t . View
Rattlesnake M t .
. . .do.. . 42 9.35 lo3
... d o . . . 4 2 3.36 x lo3
Richey, U.S. and S.J . . . .do. . . 4 0 2.3 x 10'
7
Deposit
S t . Patrick (Camp 8)
Skyline Nine
Sunrise
Toujours Gai
White Feather
Apex
Darrington
Gold Bug Claims
Green Mine
He1 emar H i 11 -Top Chrome
Hof f
Murphy
P i l l i k in
She1 l y
Sheppard Mine
Simon
Stafford
A1 i ce Mine
Black Bow C l a i m (Avery)
Blue Brush
Butler, Estate chrome, etc .
Camden Mine
Clara ti
Chrome Gulch Group
Jack Sprat Group
Lacey
L e t t y
Long Ledge Group Lo t t y
L i t t l e Rock ~ i ' n e
Lucky Boy
Location Grade Tonnage (County) (Percent (Metric tons)
Crp03
Del l o r t e 4 0 1.27 x l o2
... do . . . 4 7 2.64 x l o 2
... do. . . 3 8 6.5 x 10' El Dorado 45 8.0 x loo . ..do.. . 45 2.2 lo4 . . .do.. . 40 2.0 x 10 2
... do.. . 4 7 1.5 x lo2
. ..do.. . 3 8 8.7 x 10'
... do. . . 45 9.0 x+.1oo
... do.. . 3 1 2 . O x 1 o 2
... do.. . 10 5.0 x 10 3
. . .do.. . 43 1 . 1 ~ 1 0 ~
. . .do.. . 3 0 1.28 x lo3
. . .do.. . 34 1.2 x 10 2
. . .do.. . 35 1.05 x lo2
. . .do.. . 4 5 1.98 x l o 2
Fresno 40 4.5 x lo1
... do. . .
... do.. .
... do.. .
... do.. .
. . . d o . . .
... d o . . .
... do . . .
... d o . . .
. . .do.. .
... do.. .
... do.. .
. . .do.. .
. ..do.. .
Deposi t name Location (county)
Manches ter Mine Fresno McCurty . . .do. . . Red Slide Group ... do. . . Rock Wren Mine . . .do.. . Rose Claims . . .do.. . S a i n t ... do.. . Sunset ... do.. . Black Diamond or Grey Eagle Group Glenn
Binder 20. 1 Humbol d t
Blue Creek Tunnel . . .do.. . Lass ic Peak . . .do.. . Pecwan . ..do.. . Pyramid ... do.. . White Cedar ... do.. . Wilder ( F i s h Creek) . . .do., . Black Bart (Great Western) Lake
But ler C l aims . . . do . . . Gunn Claims ... do. . . Harp and Sons Ranch Depos i t s ... do, . . Kangaroo Court Mines . . .do.. . Sutro Mine
Lucky Strike Mine
Daisy (Aldelabron)
Elder Claim
t~loore Pli ne
F.2ullaly Mine
f i i chel i n i Mine
Alta Hi l l
Bowden Prospect
Codd Prospect D i ckerson
Eden
. . .do.. .
. .do.. . Monterey
Na pa
. . .do.. .
... do. . .
... do. . . Nevada
-. . .do.. . . . .do.. . . . .do.. . . .*do. . .
Tonnage (Metric tons)
Depos i t name Locat ion (County)
Grade Tonnage (Percent (Metric tons) Cr203 )
Geach Gillis Prospect
Half Chrome
Hol seman (and others) Merrif ield
Moscatelli ho. 1
Moscatel l i No. 2
Mu1 cahy Prospect 01 sen
Porter P rope r ty
Red Ledge
Sp r ing Hi1 1
Snyder
Tomki n
Wai te Wo1 f Creek Area
Beat B o i l e r P i t
Black Rock Chrome
Bunker Buttercup Chrome
Esther and Phyllis F i ddl e r ' s Green
Gas Canyon
Green (Americus)
Green's Capco Leases Hodge Ranch
Horseshoe
Ju1 i an
Maralls' Capco Leases
Mou'ntain View Group
New Hope
North Fork Chrome
Nevada
. . .do. . .
... do.. .
. . .do. . .
. . .do.. .
. . .do. *
. . ,do.. .
. . .do.. .
... do.. .
. . .do.. .
. . .do.. .
... do.
... do. . .
... do.. .
... do. . .
. . .do. *. Placer
. .do.. .
. .*do.. .
. . .do. . .
. . .do.. .
... do. * .
. . .do. . .
.* .do . . .
. . . d o . . .
. . . d o . . .
. . . d o * . .
. . .do. . .
... do. . .
. . .do. . .
... do.. .
. . .do.. *
. . .do.. . 10
Deposit name
Parker Poco Tie~npo Quartz Randal 1
Snakehead (Jumbo)
S o u t h e r n Pac i f ic p r o p e r t y
S u n s e t
Washo~lt
West Chrome
Cattle S p r i n g s
C h i c a p
Clover Leaf
Commander
D i amofid
Edel irie
Hudson (Full er Claims)
Jack Forth
Mc Carty
Poodl e Dog Skyline No. I
Sky1 i n e No. 2
S p o t
White P i n e Mine
Wolf Creek
!4estern Magnesi t e E l Frimero
, C a s t r o Mine
Z e r f i r g Ranch
P i n e M t . Claims
T r i n i d a d
Souss Ranch
N o r c r o s s
Lucky Strike Mine
Victory No. 3
Location Grade (County) (Percent
Cr203 J
Tonnage (Me t r i c tons)
P I acer ... do.. . . . .do.. . ... do. . . . . .do.. . . . .do.. . . . .do, . . . . .do.. . P l umas
... do. . .
. . .do.. .
. . .do.. . ,...do.. . . . .do.. . . . .do.. . . ..do.. . - . . .do.. . ... do.. . . . . d o . . . . . .do. * . . . .do. . . * .do.. . ... do.. . Santa Clara
San L u i s Obispo
. . .do.. .
. * . do . . .
. . .do
... do. . .
... do.. .
... do . . .
. ..do.. . *. .do.. .
Deposit name
Srdee t w a ter Sunshine
(unnamed)
Shotgun Creek
Round Bottom
Location Grade (County) (Percent
Crp03)
San Luis Obispo 45
. . .do.. . 38
... do . . . 51
Shas t a 4 4
... do . . . 49
Tonnage (Metric tans)
Li t t l e Castle Creek Mine ...do.. . 4 6 1.67 x 10 4
Forest Queen ... do.. . 43 1.88 lo3 Dorriss Sie r ra 4 5 7.5 x lo1
Fi nan ... do.. . 47 8.0 x lo0
Gi bsonvi 11 e . ..do.. . 4 4 2.62 x 10'
Golconda Fraction . . .do.. . 39 1.2 x lo2
Mi 1 t.on ... do. . . 4 1 2.5 x 10 2
Qxford ... do.. . 3 8 4-0 x 10 3 ,
Roupe . . .do . . . 44 4.0 x 10 2
White Bear . . .do.. . 4 1 3*75 x 10 2
Cogg i ns S i s kiyou 39 4.22 x lo3
Cyclone Gap . ..do. -. 47 2.4 x lo3
Doe F l a t . ..do.. . 36 2.4 x lo3 Dozi e r . . .do.. . 4 2 4.65 x 10' E l k Creek Claim . ..do.. . 4 1 1.87 x lo2
Fai rvi cw ... do. . . 3 9 2.26 x lo3
Hayden and Hi1 t . . .do.. . 5 0 6.9 x 10'
Josephine . . .do.. . 45 1.0 lo3
McGuffy Creek Group ... do. . . 5 5 8.25 x lo3 R
Moffet t Creek Group . . .do. . . 4 9 4.25 x loL
Peg Ley (Lambert) ... do. . . 5 4 6.31 x lo2 . . .do . . , 3 6 6.0 x 10
4 Se iad Creek (bit. View)
Snowy Ridge . . .do . . . 39 2.98 x 10'
Laton Mine Sonoma 4 8 3.0 lo3
b d e i r a ... do.. . 3 4 1.0 x lo2
Meeker (Sonoma Chrome, lnc ) . . .do. . . 4 0 2.0 x 10 3
We1 ch Prospect . . .do.. . 43 2.0 x 10 1
Deposi t name Location (County)
Grade (Percent
Creo3 1
Tonnage ( l b l e t r i c tons)
No 5
Lucky Girl Mine
Chrome Camp Mine
Black Bear Mine
Black Bart Group
Adobe Canyon Group
Black Chrome Blue Sky (Lucky S t a r )
Elder Creek
Elder Crsek Group
Kl ei nsorge Group
Noble Electric Co.
S t a t e School
Bragdor
Crow Creek Group
tlappy Go Lucky
I Wonder
Mule Creek
Oak Ridge
,Reds ki n
September Morn Shamrock
S t a r k Bee
Sunnysl ope
Yellow Pine
Tangle Blue D i v i d e
Earl Smith
Gill (Gill Ranch)
Holston (Vaughn)
Ace o f Spades
Booker Lease Don Pedro
E g g l i n g and Williams
Stani sl aus ... do . . . . . .do*. . . . .do . . . . . .do*. . ... do.. . Tehama
. . .do.. .
. . .do.. .
... do.. .
. . .do . . .
... do.. .
... do.. . T r i n i t y
. . .do.. .
. . .do. . . 4 9 1.7 x 10'
... d o . . . 42. 1.0 x 10 2
. . . d o . . . 4 8 6.4 x 10'
... do.. . 43 5.0 x 10 P
. . .do.. .
... do. . .
...* 0.. .
... do. . . Tul a r e
... do. . .
. . .do. . . Tuol umne
. . .do.. .
... do.. .
. . .do. . .
Deposit name Loca-ti on Grade Tonnage ( C o u n t y ) (Percent ( l 9 e t r i c t o n s )
Crp03)
Mc Cormick Tuol umne 4 6 3.85 lo3 Mac kay ... do.. . 37 4.15 x 1.0
2
Mum and Alice June cla ims . . .do.. . 17 2.5 x lo4
North End, West End and ... do.. . 3 8 3.5 x 10 3
Spotted Fawn 1
Perconi Ranch Deposits . . .do., . 33 5.0 x IQ* . . .do.. . 3 5 1.70, x 10
3 Quigy Richards ... do.. . 23 8.45 x lo3 Shafer lease
Sims
. . .do.. . 3 1 8.5 x lo0
... do. . . 3 7 2.9 x 10 1
Sull i van and Kahl ... do. . . 31 8.5 x 10 2
Chall enge Area ... do. .. 3 3 1.75 x 10'
Camptonvi 1 1 e Area . . .do . . . 3 8 3 . 8 6 ~ 10' ;
Porphyry Copper
Deposits were placed in the c lass i f they included disseminated
pyr i te , chal copyri t e , and frequently molybdeni te and borni t e in o r near
f e l s i c t o intermediate intrusive rocks. Most deposits had a t l eas t one
porphyry f a c i e s o f intrusive. In most cases, deposits were placed i n
t h i s class i f they were called porphyries i n the l i t e ra tu re . Deposits
from western Canada and Alaska were selected as the nost appropriate
nodel for Alaskan deposits because the average grades and tonnages of
porphyry copper deposits tend t o be lower fo r deposits located farther
north along the trend o f deposi ts from Chile, through the southwestern
U.S., t o British Columbia and Alaska. In s p i t e o f t h i s precaution, the
grades of the Canadian deposits appeared t o be t o o h i g h compared to
those reported i n preliminary d r i l l i ng of t he Alaskan deposits; the
grade model used i n the RAMRAP reports was therefore a result of a sub-
j ec t ive adjustment o f the observed d is t r ibut ion . Both grade models are
presented i n Table 12.
Table 2.--Porphyry Copper Deposits
Deposit name ~ o c a t i o n d C o p p e r Molybdenum Tonnage Reference grade grade (fletric (Percent) (.Percent) tons
x 106)
Bell Capper CNBC 0.48 0.006 100. 3
tlorri son CNBC .42 -013 95. 3
Dorothy CNBC .25 .01 45. 5
Krai n (Keystone) CNBC .45 -013 18. 1
Axe CNBC .45 .012 45.4 2
Ann (Gravel Mt.) CNBC .27 ,003 43.4 2
Poison Mountain CNBC .33 -035 175. 3
Berg CNBC .40 -03 363. 2
Schaf t Creek (Laird)
Paramount Mining
P a t t o n H i 11 (Casino)
R i g h m o u n t ( I d e )
Bethlehem (a1 1 properties)
Brenda
Gi 1 bra1 tor
Maggie
Huckleberry
1-ornex
Is1 and Copper Caribou
Bond Crcek
Orange Hil l
0 K
CNBC
CNBC
CNYU
CNBC
CNBC
CNBC
CNBC
CNBC
CNBC
CNBC
CNBC
CNBC
USAK
USAK
CNBC
Af ton CbIBC -90
Grani sl e CNGC .43
Ingerbei 1 ( + Simi 1 karneen) CNBC .53
Galore ( S t i k i ne) CNBC 1.00
Valley C o p p e r CNBC .48
Sam Goosly CPJBC .33
Redgroup CNUC .56
Deposit name ~ o c a t i o n g Copper Malybdenum Tonnage Reference grade g r a d e (Met r ic (percent) (.Percent) tons
x 106)
Evening S t a r & Galaxy copper CNBC .58 5.4 1
June (Dease take) CNBC -389 30. 1
Primer CNBC -20 23. 5
Kwani ka CNBC .20 36, 5
B i g Onion CNBC -36 18. 5
Catface CNBC .47 209. 1
Lorraine CNBC "70 PO. 3
)/heal Tamar ( A j a x ) Ck!BC -50 9 1
Copper Mtn. CNBC -41 140. 9
Eagle CNBC .50 .039 272. 10
Earnbier Is. CNEC .28 297. 11
a/ See T a b l e 11 f o r l oca t ion codes. -
Porphyry Molybdenum
Depos i ts were c l a s s i f i e d i n t h i s g roup i f molybdenite occurs as d i s -
seminated grains o r stockworks o f quartz veins and ve in le t s i n fractured
o r brecciated, altered granitic i n t rus i ve rocks and the associated country
rocks o r i f deposi ts were reported t o be of t he porphyry molybdenum type
birt no information on the geology was presented. Subsequent t o the col-
l e c t i a n of these da ta and t h e i r use i n the RAMRAP est imates, rapid develop-
ments have occurred i n exploration for and know1 edge about molybdenum
depos5ts. Several deposi ts , such a s Quartz Mill and Thompson Creek, are
now known t o be much l a rge r than our o r i g i n a l - d a t a showed. According t o
T. Theodore (personal communication, 1979), theoret ical considerations I '
resu l t ing f rom recent research suggest t h a t deposits i n Colorado may he of
a specia l type n o t l i k e l y t o occur i n Alaska. In Table 12 , a reyi.sed
grade-tonnage model t h a t reflects the r e v i s e d grade and tonnage est imates
and t h e dele t ion of Colorado and New Mexico deposi ts , i s presented,
Tab1 e 3.--Porphyry Molybdenum Deposits
a/ Deposit name - b / Location - Molybdenum grade
- (Percent)
C l imax* USCO 0.20
Henderson* USCO .297
Ques ta* USNM -10
Quartz Hi l l USAK .081
M t . Emmons* USCO .26
Enda ko CNBC .86
Boss Mountain CNBC -22
A1 i c e ( ~ i m e Creek,BC Moly) CNBC .12
Moly (Bell) NCBC -066
Adera-Ruby Creek (Adanac) CNBC .096
S t . Elmo CNBC .20
Giant CNBC .I69
Canam CNBC .033
E l k CNBC .I39
Glacier Gulch CNBC .17
Sunshine Creek (combined) CNBC .098
Has k i n Mountain Cr!EC .09
Carmi & Lake CNBC -09
Gem (Bailey, Meg) CNBC .16
Lucky Ship CNBC .084
Karen CNBC .I6
Roundy Creek CXBC .OG4
Red Mountain CNBC .24
Red Bi rd CNBC .15
Pitrnan (JB) CNBC . 08
Ajax CNBC .073
S t o r i e Moly CNBC .072
Thompson Creek USID .ll
bla 1 :nb j erg g r l d .15
Cannivan G US!.ZT .096
M t . Tolman USbJA .063
Tonnage References (Metric tons x 106)
800. 7
a/ * Deposits not used i n revised grade-tonnage model - b/ See Table 11 f o r locat ion codes. -
19
SkarnlTacti te Tungsten
Tungsten-bearing deposits were placed i n t h i s class if they
occurred near the contact of limestone or dolomite with i n t r u s i v e
igneous rocks. The t a c t i t e minerals include garnet, epidote, and
magnetite, and the tungsten occurs only as scheel i te. A variety of
data sources were used,including some company-confidential sources.
Some of the deposits are listed without d e p o s i t names, l o c a l i t i e s ,
or sources i n order to preserve the confidential nature of the data.
The g~c:graph ic distribution o f t h e deposi ts is world-wide, but the
unidentified depos i t s are located in the United States.
Tab1 E 4 . - - S k a r n / T a c t i t e T u n g s t e n Deposits
Deposit name ~ o c a t i on&/ T u n g s t e n Tonnage Reference Wade (Metric - ( P e r c e n t W ) tons
x 103)
Mactung
Tempi ute A T u n g s t e n d e p o s i t
Quixaba
Maykhura
K i n g Island
Jer,sey-Emeral d
Osgood Mountains
S t a rb r i g h t
Tyrny- Auz
Brejui
Red B u t t o n
Iron Mountain
S a n Dong
U1 udag
L o s t Creek
C u p r i c
CNNT
USNV
U NZL
BRSL
URTD
AUTS
CNBC
USNV
USCA
URRS
BRSL
USMT
USNM
KORA TRKY
USMT
USUT
Deposit name ~ o c a t i o n d Tungsten Tonnage Reference (Metric
aEt:ent W ) tons 103)
Ysxjoberg SbJDN .26 2,500. 12
Victory GI CNBC .40 83.8 8
a/ See Table I1 for loca t ion codes. -
Mercury
Depos i ts were selected for the RAMRAP mercury model on t h o b a s i s of
recomnena.tions of geologists fami 1 iar w i t h the mercury depos i ts of
A1 aska. For example, Sainsbury and EilacKev3tt (1965) state: "The Alaskan
deposits, therefore, may be expected t o be roughly comparable t o similar /
deposits i n Nevada i n general ways." Similarly, deposits from California
erere n o t selected for the model on the basis o f i n f o r i x d recom~endations.
For mercury deposits, da t a on grades and tonnages i s n o t generally
reported, t h o u g h t he contained metal o f the deposits is .
Data for t h i s model were obtained through t h e ef for t s of f-1, Johnson
and J . Peterson from ,the U.S. Geological Survey C R I B f i l e (Peterson and I
others, 1977), and is available to the public through the G . E . timesharing
system.
Table 5.--Mercury Deposits
(da ta source 1 is t e d i n references)
Depos i t name ~ o c a t i on?-/ Mercury cantent ( M e t r i c tons)
A & B USNY 7.9
A1 exander Mine
Allen Mine
Allison Prospect A1 pine Prospect Ames & Bancroft
Arni t y
Andi es Property
Angel Peak
Antel ope
Axel andl e
B & B
Baldwin
Barnes Butte
Barnum - McDonnell
B e o w a w
Berry Creek
Betty Mine
B i r t h d a y Group Black B u t t e
Black Hawk
B l a c k L i z a r d
Blue Can
Blue Ridge
Bonanza
Bonita
Bretz B u c k s k i n
B u c k s k i n P e a k
Buena V i s t a
USOR
USNV
USOR -10
USNY .034
USOR .24
USOR 11,
USNV 120.
USOR 1.2
USNV -14
USOR
USNY
USI4V
USOR
USWA
USNV
USNV
USNV
USNV
USOR
USNV
USNV
USNV
USOR
USOR
USOR
USOR
USNV
USNV
USOR
Deposit name ~ o c a t i o n g
Bunker Hi l l
Butte Quicksilver
Byram-Oscar
Cahi 11
Cardinal
Cast1 e Peak Mine
Cast le Rock Prospect
Champion Mine
Chisholm
C i n n a b a r Hills
C i n n a b a r Mountain
Col eman
Container Mine
Cordero
Costa Crawford
Currier Drew Mine
Dutch F l a t Mine
Eastern S t a r
E l dorado
E l khead Mine
F & L
Fau l t Line
Fern t,line
Finger
Fi s her-Roy Mine
Flower Group Freckles
Glass Buttes
Goldbanks Quicksilver
Govenor Group
Gray Prospect
USNV
USNV
USOE
USNV
USNV
USNV
USNV
USOR
USOR
USNV
USOR
USNV
usriv USNV
USNV
USNV
USOR
USNV
USNV
USNV
USNV
USOR
USNV
USNV
US I D
USfilV
USWA
USNV
USNV
USOR
USNV
USNV
USOR
Mercury content (Metric tons)
* 34
34.5
2.2
40.
4.5
91.
-034
1 .3
1.1
3.4
1.3
-34
2.8
3600.
.10
.034
- 10 140.
16.
1.7
43.
3 .6
-34
- 2 1
1000.
. l o
130.
1.7
59.
3.2
120.
4.5
-24
Deposit name
Hapgood
Hard1 uc k Property
Harvey
Hasbrouke Property
Hermes Hi l l s i de
Hi t h Mine
Horse Canyon I
Horse Heaven
Horse Mountain Horton Mine
Hot gratlp
. Humbol d t
Idaho Aimaden
Inman Mine
Jackpot Property
Jimmie Ann
Juniper Mine
Juniper Hill Mine
Kigg ins Mine
King George
Lakevi ew Property
Lark Group
Last Chance Prospect Li t t le L inda
Lost Steers Group
Luckey Boy Mine
l y t l e - Lynch
M & ril
Mammoth
~ o c a ti o d Mercury content (Metric tons)
USNV 3.4
USNV 1.4
usrlv 2.4
USHV .38
US I D 920.
USNV 5.5
USNV 2.4
USNV 21.
USOR 390.
USNV 6.5
USMV 17.
USNV 7.3
USOR .17
USID 620.
USNV 2.4
USNV .14
USOR * 15.
USNV 110.
USID -069
USOR 2.4
USMV 11.
USNV .069
USNV 1.7
USFIV .034
USNV .59
USNV 16.
USUT 21.
USWA .34
USNV 3.4
USNV 2.4
flari posa Prospect
Maud S. Mine
blaury Mountain Mine
USNV
USOR
USOR
Deposit name ~ o c a t i o r d 1-lercury content (Pletric tons)
l4cAdoo US I i V 57.
14cCoy USNV 11.
McDermi tt
bli 1 1 er Nina Development
Mogul Group
/don tgornery
Moser
t,lotheriode Mine
M o u n t Tobin
Mountain King
Nevada Cinnabar
Nevada S u l f u r
blei bu h r Prospect
Misbet Mine
Nonpareil
N o r t h Fork
O.K. P r o s p e c t 01 d Timer Property
O p a l i t e Mine
O r o n o g o
Pershing Mine
Platner
Poinset ta Mine
Prohert Mine
R a b b i t Hole
R a t Hole
Rat t l esnake
Red Bird Group
Red Bird Mine
Red Cloud M i n e
Red Ore Mine
Red Rock M i n e
Red Rose
USFJV
U S I D
USNV
USOP,
USNV
USNV
USOR
USFlV
USOR
USFIV
USNV
USNV
USOR
USOR
USNV
USNV
USNV
USOR
USOR
USNV
usoa USNV
USUT
USOR
USNV
USIJV
USldV
USNV
USOR
USI~IV
USNV
USN\I
Deposit name
Reward Property
Rick Property
Rimrock and Homestake
Roba-Westfall
Rosebud Prospect
Round Mountain
Roxana
Royal Reward
Sacramento Go1 d Pli ne San Pedro Group Sena tcr S h e e b a ~
S i 1 ver Cloud
S t a r l i g h t Mine
Steamboat Sp r ings
Steens Mountain Mine
Stockton Property St ick1 and Butte
Taylor Ranch
Teapot Prospect Tiptop Praspect
Towner
Val entine Van Wess
V i r g i n i a Claims
Vulture
Wal ker Mine
blar Eagle
Washington Hill
Watson Glhite Peaks Group
\dhaleyts
USNU
usr4v USNV
USOR
USNV
USOR
USOR
USWA
USUT
USNV
USNV
USNV
USNV
USNV
USNV
USOR
USNV
USOR
USOR
USNV
USNV
USOR
US I D
USNV
US I D
USNV
USNV
usol?
usr4v USOR
USNV
USNV
Mercury content ( M e t r i c tons)
Deposit name Location&/ Mercury content ( P k t r i c tons)
Wi ldhorse USNV 30.
Ye1 lowcat USNV .69
a/ See Table 11 f o r loca t ion codes. -
1ntrus.ive [\lickel Su l f ide
The c l a s s i f i c a t i o n of nickel deposits (Maldre t t , 1973) has changed
rap id ly i n the l a s t t e n years a s the r e s u l t of new information about the
geology o f these deposi ts . T h u s a se t of three empirical c r i t e r i a were
used t o obtain a se t of da ta f o r the RAMRAP nickel deposit model. The
c r i t e r i a used t o s e l e c t data f o r the i n t ru s ive nickel sulfide model
were: deposits from orogenic be1 t s only were se lec ted , deposits only
w i t h r e p o r t e d nickel and copper grades a n d a n associated tonnage were
selected, and deposits suspscted of h a v i n g e x t r u s i v e ul t rabas ic hos t
rocks were n o t selected.
Table 6 .--Intrusive IJickeI S u l f i d e Deposits
Deposit name ~ocatio,niL/ N i grade Cu grade ( Percent) ( ~ e r c e n t)
Ax is Lake
Bird River
Carr Boyd
Giant Mascot
Gordon Lake
Kelly Lake K l uane Lake
La kemon t Limerick
Lorraine
Lynn Lake
Macassa
Mas kwa
Elidrim
Nembeiben Lake
Norpax
Pickle. Crow
Populus Lake
Renzy Lake
S t . Fabien
S t . Stephen
Temacjami Mine
Zul apa Be1 1 e tz r re
Canal a sk
Juneau lake
ke t t y Lake
Chance Lake
Gagnk
CNSK
CNMN
AUlrlA
' CNBC
CNON
CNQB
NCYU
CNON
cr4orJ
CNQB
CNMN
CNGN
CNMN
CNQB
CNSK
CNOFJ
CNON
CNON
CNQB
CNQB
CNNB
CNON
CNQB ,
CNQB
CNYU
CtJON
CNQB
CNQB
CNQB
Tonnage Reference (Metric tons x 106)
Deposit name ~ o c a t i b g j W i grade Cu grade Tonnage Reference- (Percent) (percent) (Netri c
tons x 106)
Fiicobi Lake
Sudbury Shakespeare
P!cVi ttie - Graham Renner Prospect P:i copar Jacobus Prospect
Diadem Prospect
Cat Lake
Ivy Groc;p
E & L Cons Flogador
Dumont [\{endel I )
I?. Iil. Nickel
):at tagan i Lake
Ovians
Flew Dominion
Keevil , etc.
Ore Faul t
CNQB
CNON
CMON
CNON
CNON
CNOI.1 '
CNON
CNrlN
CNSK
CMBC
CNQB
CNQB
CNQB CNQB
CNON CNOtJ
CNMN
CNMN
t4ontcalm Township CNON 1.00 .35 2.7 2
a/ See Table 11 for locat ion codes. -
Vein Gold
The d e f i n i t i o n o f what c o n s t i t u t e s a deposit is perhaps most
d i f f i c u l t fo r vein deposits. Often several mines operate i n the same
ve in o r a mine may operate i n several veins. Thus, several mines may
be combined t o represent one depos i t . As w i t h mercury deposits, data
on the contained metal o f t h e d e p o s i t s , rather than on t h e grades and
tonna~es, is generally reported.
Tab1 e 7 .--Vein Gold Deposits
Deposit name ~ o c a t i a n d - Aurum Deposit CP!BC
Artic Mine CiJY U
B ig Missouri CiiBC
Bralorne-Pioneer CflSC
Brown McDade CNY U
SK #3 Vein CNBC Cariboo Gold Quartz - I s l a n d Ntn. CNBC
Cari bbo-McKi nney CK3C
Zeballos-Spud Val1 ey-Privateer CNBC Mount Zeballos-Cen t r a l Zeballos
Detoni a
Engineer
Grani te Poorman
H i Do
Laforma
Le Roi-Centre Star-War Eagle
Lucky Seven
M t . Nansen
Pola r i s Taku Premier
CFIBC
CI'JBC
CNBC
CNBC
- CNYU
CPIBC
CNBC
CNY U
CEISC
CtlBC
Salmon Gold CNBC Sheep Creek-Gold Be1 t, Kootenay CNBC
Be1 1 -Reno
Arl ington
Er ie Creek
Roche Deboule Mine
Smith Nash Surf In le t
Union Frank1 i n
V e l v e t
Venus Mine
CNBC
CNBC
cr.iac CPIBC
CNBC
CKBC
CNBC
CNY U
Go1 d content Reference.. (Metric tons)
Depos i t name ~ o c a t i o d Gold content References (Metric tons)
V i det te CNBC 1.2 1 ,3
Ymi r CbIBC 3.4 3
Alaska Juneau USAK 76. 4
Berness Say USAK 2.0 4
Early B i r d Mine CNBC 1.5 4
Fai rvi ew-01 i ver CNBC .43 4
Nighthawk U S1dA 1.4 4
Perseverance USAK 13. 4
Republ i r, USWA 24. 4
S l a t e Crcek US WA .83 4
Surf Po in t CNBC 11. 4
Treadwei i USAK 95 . 4
Wenatchee USlJA 5.4 4 4 Wingdam Mine CNBC 1.5 1 1
a/ See Tab le 11 for l o c a t i o n codes. -
Mafic Volcanogenic Copper
Deposits were selected on the basis of the presence o f massive
and irregular sulfide bodies in or closely assoc ia ted w i t h mafic
vo lcan ic rocks in eugeosyncl ines. Su? f i d e r,i neral s inc lude py r i t e ,
chalcopyri te , and, for many deposi ' ts, sphal eri te. The rnafic volcanic
rocks generally present were basalt or other basic lavas; deposits
having any associated felsic or intermediate vo lcan ic rocks were
excluded. A copper grade and associated tonnage were required in order
fo r t he deposi t t o be i n c l u d e d i n t he d a t a used.
*/- /-i..af I c Vol canogeni c Copper Depos i t s ..-- __---
Depos i ts name ~ ~ c a t i o n & / Copper L i nc Tonnage ~ e f e r e n c e grade grade (l,?etric (.Percent) ( Percen t ) tu;:-,
- x 105) - -- Besshi J PAN 3.80 190. 1
Sazare Su r i gad Cu-Zn
Sur igad Cu
M i ndanao
Sa!~karapi
Balaba? is.
S l o v i nlig
Skouries Caracass i
JPAN
PLPN PLPN
PLPN
I N D S
PLPN
CZSL
CRCE
GRC E .r
GRC E 1 Limogardi 1.53 29.3
Kure TRKY 2.10 .70 43.1 1 Asi koy- Kitrewest TR KY 1.90
Geda k TR KY 5.00
Apl i k i
Kalavassos
CPRS 1.80 .60 16.5 1
CPRS 1.50 -70 24.7 1
Kynousa C PRS 2.30 3.40 5.15 1
Limnt CPRS 1.40 59.8 1
Mauri Sykia CPRS 2.00 3.5 1
blaurououni CPRS 4.00 .40 150 1
Petka CPRS 1.80 1.50 5.0 1
Skourioti ssa CPRS 2.30 66.8 1
Twin J-MT CNBC 2.80 .86 2.3 1
Campbell Chibougamau CNQS 3.00
Per i l1 Islm CNQB 2.00
Chi bougamau E x p l o r e s CNQB .90 5.4 1
O u t o k i epu FNLD 4.00 .80 200. 1
Ropkl ev N Rid G 2.60 5.00 2,34 1
V i gnas NRlJG 3.20 3.50 8.44 1
Lokken NRl4G 2.60 9.80 183 1
-, Ceposit name ~ o c a t i o n g Copper Zinc Tonnage Reference
grade grade (Metric '(Percent) (Percent) tons
x 105)
Fordal NRWG 2.80 1.20 88.2 1
Roroscu NRWG 1.70 .07 67. 3
Ki 11 i ngdal N RlJG 1.80 .66 9.1 1
Gjersvi k NRWG 2.10 14.3 1
Tuerrejel 1 e t NRWG 2.50 1.50 8.0 I Stekenjokk SWDN 1.60 3.50 320. 1
S a i n Be1 1 -Chessy FRNC 5.0 6.00 400. 1
a/ See Tab12 11 fo r loca t ion codes. -
Fels ic t o Intermediate Volcanogenic Sulfide
Deposits were c l a s s i f i ed i n t h i s group i f they consisted of massive
and i r r e g u l a r su l f i de bodies i n or c losely associated w i t h f e l s i c t o
intermediate volcanic rocks i n submarine Tlysch environments. The s u l f i d e
minerals consisted of chalcopyri te , py r i t e o r pyrrhoti t e , sphaler i te ,
and/or galena. In order t o be included i n the data se t , both a copper
grade and associated tonnage had t o have been reported. For some deposi ts
gold and/or s i l v e r grades and associated tonnages were reported. Many
o f the reported tonnages associated w i t h gold and s i l v e r grades were
s ign i f i c an t l y loerer t h a n the tonnages associated w i t h copper grades i n
t h e saze deposits . I t was assumed t h a t f o r many deposits only a por t ion ,
of t he d q o s i t had gold and s i l v e r grades h i g h enough t o be reported and
t h a t i t would there fore be misleading t o present these grades with the
nigher tonnages assoc ia ted w i t h the copper grades. Thus, for silver and
sold only contained metal i s reported. Six deposits from Newfoundland
t h z t , according t o the information ava i lab le , met the c r i t e r i a f o r t h i s
, d e p o s i t type have been i den t i f i ed by D . Cox (personal communication, 1979)
a s belonging t o t he mafic volcanogenic deposit type and are not used i n
the revised grade-tonnage model f o r f e l s i c t o intermediate volcanogenic
deposi ts .
Table 9 , - -Fels ic t o Intermediate Volcanogenic Deposits
Deposit named Loca- Gold tior&/ ton-
nage (bletri c tons)
Suffield Mine CNQB .50
Sol b ~ c Mine CNQB .60
Cupra Mine CNQB .503
No. 5 Mine CNQB
No. 1 2 Mt ne-Anaconda CPiKB
Anaconda Crebady CNN3
Heath Steel? Orebody CNNB 4.07
Captain Minzs prope r ty C N M .02
Nigadoo R i v e r CNN3
B i g Hil l CriNi3
Banet Prospect USIwIE 2.5'
MS ndamar USbTE
York Harbor CNNS
Rambier Minz Property* CNNF 7.3
Ti1 t Cove Cu Pyri tes* CNNF 9.8
Ti1 t Cove Chalco* CNNF 6.8
B e t t s Cove* CRNF 1.2
Whal esback* CNNF
Gull Pond-Gull b r i d g e M.* CNiJF
Avoca Cu I RLD
Vanze Mine CNQB
Morbrun Property CNQS 4.5
Golden Mani tou Mine CNQB 6.0
Zulaka Mina CNQB
Normetal l,\i ne CNQB 4.32
Ke1 ly-Osmond Property CNQ6
Joutel Copper Mine CNQB
Orchan Mine CNQB 1.3
New Hosco Mine CNQB
Si 1 ver ton- nage (Metric tons)
70.
51.
36.7
799.
1920.
165.
542.
2.7
171.
109.
6.5
32.7
3.9
11.5
4.5
3.5
53.4
204.
405.
28.3
106.
Copper g rade (Per- cent )
Z i n c Lead Tonnage Ref- grade g rade (Iletric er- (Per- (Per- tons ences cent) cent) x lo4)
Deposit name%/ Loca- t i onkl
Go1 d S i l ve r Copper Zinc Lead Tonnage Ref- ton- ton- grade grad2 grade (M2tric er- nage nage (Per- (Per- (Per- tons ences (Metric (Metric cent) cent) cent) x lo4) t o n s ) tons )
Nori t a I4i ne
Garon Lake Property
Besa koa
Saxbergs t
Garkenberg
Rakkejaur
Pyhasalmi
Ely Min2
Elizabeth :b:i ne
t l u n t i ngdon !line
Harvey Hi1 1 Mine
Quandt
Fl i n Elon Orebody
Mandy titine
Schis t Lake
Fl e x a r
S o u r d o u g h Bay
V a ~ p Lake
Morton L-Dickson L
Fox Lake
Nil 1 echo Property
Kotia-Kamiskotia Pline
Canadian Jarnieson Pr. Horne Mine
Wai t e Uuf a u l t Property
West Wasa Property
Munaz Property
Lake D u f a u l t [,lines
Idaite Amulet Nine
Cerro Roja Orebody
Santa Domingo
Azna l Col la r
CNQB
CNQB
NLGS
SWDN
SWDN -30 5.20 1000. 1
SWDN 12. 450. .20 2.60 1000. 1
FNLD -80 63.8 .85 2.80 .06 375. 1 USVT 3.50 50. 1
USVT 1.80 639. 1
CNSK 2.75 1.50 50. 1 i
Cr4MN 119. 1700. 2.99 4.40 5690. 1
CMMN 6.9 i6.8- 5.58 6.60 91.2 1
CNMN .20 - 9 4.11 -40 24.1 1
CNSK 3.00 7 5. 1
CNSK 1.01 6.8 1.10 1.60 50 .' 1
CNMN 2.53 3.20 57.7 1
CNMN 1.74 2.35 122. 1
CNO?J 97.1 -77 3.10 .01 243. 1
CKON
CNQB 257.
CNQB
CNQB
CNQB 11.2 354. 4.71 3.10 955. 1
SPAN 3 2 - 7 792. -80 4860, 1
PORT . 1.17 2150. 1
SPAN 2.20 500. 1
Deposit nam& Loca- Gold tionll/ ton-
nage (Met r ic tons)
Porven i r Cu SPAN
Zyuzel ski URRS
Sal a i r URRS
B u r r a g a AUNW
Read Roseberry AUTS 16 .3
Anyox Hidden Creek CNBC 3.4
Britannia Mine CNBC 11.4
Iron M t . Mine USCA 7.0
Marmoth Mine USCA 3.4
United Verde Ext . Mine UZAZ 4.3
Iron King Kine UZAZ 12.2
Macuchi Mine ECDR 4.61
Aqui re C I L E
LaBalIads Mine NCLD
Mere t r i ce Mine NCLD
Heri n ITLY
Fabriche ITLY Knappenstube ASTR
Lahanos TRKY
I s r a i l TRKY
G i rlak-Gore1 e TRKY
Dzansul U R G R
Tchorokh URGR
Nyra-Fall s Lynx CNBC 10.9
Kidd Creek Mine CNON
White Lake C N M N .23
Vendome CNQB 1.23
Geco Mine CNON Matsuki J PAN
Shansanai JPAN
Mat tagarn i Mine CNBQ 9.08
Silver Copper Zinc Lead Tonnage Ref- t on - grade grade grade (Metric er- nage (Per- (Per- (Per- tons ences (Metric cent) cent) cent) x 134) tons )
10.00 2. 1
4.20 143. 1 -90 8.80 .90 1270. 1
3.70 50.3 1
1840. -95 20.00 6.00 1070. 1
187. 1.28 2390. 1 133. .95 -16 -03 4420. 1 520. 3.35 3.50 873. 1
202. 3.95 4.60 309. 1
185. 9.23 389. 1
524. 1.73 6.65 2.30 500. 1
5.2 5.00 62.4 1
2.03 340. 1
12.50 8.64 1
4.00 29.00 25.00 9.5 1
2.50 15. 9.
5.00 3.0 1
1.51) 10913. 1
2.00 12.5 1
2.55 25.8 1
2.00 250. 1 3.00 360. 1
4.50 50. 1
623. 8 .33 1.30 471. 1,2
15600. 2,43 7.00 -20 15700. 1,2
1.6 2.16 5.70 -40 4 4 - 1 1,2
57.1 .52 6.70 .30 112. 12
1510. 1.94 3.90 4720. 1,2
1-00 3.05 2.00 922. 2
1.49 2.22 .55 1030. 2
45. .55 6.75 2670. 1,2
a / *Deposits not used i n r e v i s e d grade-tonnage model. - bl See Table 11 f o r l o c a t i o n codes. -
42
Copper Skarn
1 I D e p o s i t s were c l a s s i f i e d a s c o p p e r skarns if they i n c l uded dissemin- I
a ted c h a l c o p y r i t e and, i n most cases, magnetite i n s k a r n s . Typically,
the depos i ts occur i n ~netasomatized 1 irnestones i n con tac t w i t h younger
igneous rocks. A l t h o u g h many o f the deposi ts have gold and s i lver grades
reported, t h e reported v a l u e s a re i n some cases i n c o n s i s t e n t ; therefore
go ld 2nd s i l v e r g rades are n o t p r o v i d e d here. I t i s p o s s i b l e t h a t some
. of t h 2 va lues for i n d i v i d u a l deposits reported here may a c t u a l l y repre-
sent several d e p o s i t s i n a d i s t r i c t . Three d e p o s i t s used i n the grade-
t o n n a g e model developed f o r the RAMRAP r e p o r t s have been found t o be
d u p l i c a t e s and have been removed from t h i s l i s t ; seven other deposi . t s J i
were added t o t h e l i s t .
Table 10.--Copper Skarn Deposits
Deposit name Location - a/ Grade Tonnage Reference (percent) (metric
tons x 104
Gaspe Copper-Murdochvi 1 l e
Wexford Mines Prop.
Tasu-Wesfrob Mine Cu
Yreka Benson Lake
Kasaan Peninsula
Craigmcflt Cu
Phoenix
Snowshow M. Phoenix
Meme Zone
Cassius Prop.
Cerro deCobte-Cundina fllarca
Cobri za
T i ntaya
Chal cobamba
Karnaish Cu-Ag-Au
Agdrdo and Brosso
Traverse1 l a
Sasca Montana-Neu. bloldova
Ma1 ko Trnova
Kedabeg Cu
Loei-Chiengkarn Area Cu
Mackey D i s t r i c t
Standzha D i s t r i c t
Cornel I
Elarble Bay
Jananda Ind ian Chie f
Blue Grouse
CNQB
CNBC
CNBC
CNBC
CNBC
USAK
CNBC
CNBC
CNBC
HAT I
HAT I
CLEA
PERU
PERU
PERU
JPAN
ITLY
ITLY
RHNA
BULG
U RAZ
THLD
USID
BULG
CNBC
CNBC
CNBC
CNBC
CNBC
Deposit name Location a/ Grade Tonnage Reference C~crcen t ) (Iletri c
tons x 104
Filother Lode
Sunset
B.C.
Emma
Oro Denoro Queen Victor ia
Carr Fork
Copper Canyon
Johnscn Camp
Marble Peak
Pima-?(! ssion
Miarni E a s t
P i nos A.1 t o s
CNBC
CNBC
CNBC
CNBC
CNBC
CNBC
USUT
USNV
USAZ
USA2
USAZ
USAZ
USFIfI
a/ See Table 11 f o r loca t ion codes. -
Table 11 . --Location Codes
ASTR
AUNW
AUTS
AUWA
BRSL
BULG
C ILE
CLBA
CNBC
CNHN
CNNB
CNNF
CNNS
A u s t r i a KORA
Aus t r a l i a , New South \+la1 es MLGS II , Tasmania , N C L D 'I , Western Aus t r a l i a !1l?E4IG
Brazi 1 PERU
Bulgaria PLPN
C h i l e PORT
Co1 ornbi a RMNA
Canada, B r i t i s h Columbia SPAN
" , Manitoba SWDN
'I , New Erunswick THLD
" , Newfoundland TRKY
'I , Nova S c o t i a U RAZ
Korea
Hal egasy %.pub1 i c
Plerv Cal edonia
Norway
Peru P h i l i p p i n e s
Portugal
Rumania
Spain
Sweden
Thai 1 and
Turkey
U .S .S .R., Azerbaidzhan
CNNT " , Northwest T e r r i t o r y URGR 'I ., Georgia CNON 'I , Onta r io URRS I' , Russian Republic
CNQB
CNSK
cruu CPRS CZSL
ECDR FNLD
FRNC GRCE
GRLD
HAT I
I IJDS
I RLD
I TLY
JPAN
" , Quebec
'I , Saskatchewan
I' Yukon
Cyprus
Czechoslovakia
Ecuador Finland
France Greece Green1 and
H a i t i
Indonesia
I re1 and
I t a l y
Japan
U R T D
USAK
USAZ
USCA usco U S I D
. USM E
USMT
USNM
USNV
USOR
USUT
USVT
11 5 1.IA
VNZL
II , Turkrilcnia
U.S.A., Alaska
'I , Arizona
" , C a l i f o r n i a
'I , Colorado
" , Idaho
I' , Haine
'I , Montana " , New Mexico
" , Nevada
'I , Oregon
It , Utah
'I , Verro l? t
" , Washington
Venezuela
Table 12.--Grade and Tonnage Yodels
(metr ic u n i t s )
tiS, no t s i g n i f i c a n t ; *. s i g n i f i c a n t a t 5-percent leve l ; '*, s i g n i f i c a n t a: 1-percent leve l
Deposit Type
topper Skarn
P o d i f o m Chromi te
Porphyry Polybdenurn
-. Porphyry C c p p r
-- b f i c
Var iab le ( u n i t s )
Tonnage ( m i l l i o n s o f tons)
Avergge copper grade (percent)
Average go ld grade l o c a l l y s t g n i f i c a n t bu t no t determined
Tonnage o f Cr203(tons)
Tonnage ( M i l l i o n s o f tons)
Average rx)lybdenum grade (percent Ho)
Tonnage ( m i l l i o n s o f tons)
Average copper grade (percent)
Averags cosper grade f o r A12ska (percent )
Average nolybdznum grade (percent Mo) -- Tonnage ( m i l l i o n s of tons)
Nu7b.r o f ~ o r r e y a t i o n 90 prrcerii 53-percen: 10 percent d e p o s i t s Coef f ic ients o f degosits o f d??ssits o f deposits used have a t t a . i e a: h a v ~ a t
l eas t 1e:st l e a s t
42 0.13 2.60 52.00
42 w i t h tonnagr 0.81 1.73 3.50 * -0.49+*
268 83.03 1100.00
27 1.50 25.00 430.00 '
27 w i t h t a n n a ~ e O.G6 0.11 0.19 = -0.31 1iS
4 1 19.00 93.00 450.00
41 w i t h tonnage 0.25 -0.09 N5
0.10 0.23
4 1 0.00 0.01 0.03
0.2: 1 2.30 22.00 Vclrar~ogenic Vdssive Average copper grade w i t h tonnage 1.10 ( 2.20 4.10 Sul f ide (percent) - -0.13 NS
wi th tonnage 0.30 1.30 5.50 exc lud ing depos i ts w i thout = 0.03 NS repor ted grades (percent)
Average go ld grade l o c a l l y s i g n i f i c a n t but no t determined
---.. f e l s i c and Tonnage ( m i l l i o n s o f tons) 0.19 2.00 21 .OO I n t e m e d i a t e Volcanoganic Average copper grade 86 w i t h tonnage 0.53 1.70 5.30 Passive S u l f i d e
Hicke l S u l f i d e i n %dl1 l n t rus i ves
--.-
f'ercury
Vein Gold
Tungsten 17.00
Average tungsten grade (percent W )
/ 31
(percent)
Average z i nc grade (percent) exc lud ing depos l ts w i thout repor ted grades
Average l ead grade excluding depos i ts w f t hou t repor ted grades (percent)
Tonnage contained go ld excluding depos i ts w i thout repor ted go ld ( tons)
Tonnage contained s i l v e r exc lud ing depos i ts w i t hou t r e ~ o r t e d s i l v e r ( tons)
Tonnage ( m i l l i o n s o f tons)
Average n i c k e l grade (percent)
Average copper grad! (percent)
--
Tonnage o f contained mercury ( tons)
- Tonnare o f contained go ld {tons)
Tonnage (m i l 1 ions o f tons)
- -O.3ee
54 w i t h tonnage 0.90 3.80 15.70 = -0.16 NS
23 w i t h tonnage 0.07 0.72 7,90 -0.33 NS
35 w i t h tonnage 0.26 3.20 39. 00 * 0.78"
41 w i t h tonnage 10.03 120.03 1500.00 = 0.86"
4a 5.90
48 w i t h tonnage 0.32 -0.03 ti5
- 0.03 HS 43 w i t h tonnage 0.19
w i t h n i cke l grade - 0.04 HS
165 120.00
43 38.00
--- 31 0.024
Chroni t e
Cal i fornia Division of fvlines, 1946-1965, Geological invest igat ions of chromite i n Cal i fornia : Cal i fornia D i v . Mines Bull. 134, published by chapers a s follows:
Par t I . Kl amath F,lountains Chap. I . Del Norte County, by F. G . \ le l l s , F. !,I. Cater, J r . , and
G. A. Rynearson, 1946, p . 1-76. Chap. 11. Siskiyou County, By F. G . Wells and F. W. Cater, J r . ,
1950, p. 77-127. Chap. 111. Shas ta , Tehama, Tr in i t y , and H u ~ ~ b o l d t Counties, by
F. G . GJells and H . E. Hawkes, 1966.
P a r t 11. Coast Ranges Chap. I . Northern Coast Ranges, by D. H . Dow and T. P. Thayer,
1946, p . 1-38. Chap. 11. Southern Coast Ranges, by G . bl . \,la1 ker and A. B. Griggs,
1953 , p. 39-88.
Par t 111. Sierra Mevada Chap. I . Tuolumne and Flariposa Counties, by F. 6 . Cater, J r . , 1948,
p. 1-32. Chap. 11. Calaveras and Amador Counties, by F. W. Cater, Jr . , 1948,
p . 33-60. Chap. 111. Tulare and eas tern Fresno Counties, by G . A. Rynearson,
1948, p . 61-104. Chap. IV. E l Dorada County, by F. W . Cater, G . A. Rynearson, and
D. H. DOW, 1351, p. 105-167. Chap. V. Northern Sierra Nevada (Placer , Nevada, Sie r r a , Yuba,
Butte, and Plumas Counties) By G . A . Rynearson, 1953, p. 169-323.
Porphyry Copper
( 1 ) Annis, R . C . , Cranstone, D . A . , and allh he, f 4 . , 1976, A Survey of Known Mineral Deposi ts i n Canada That Are Not Being Mined, Canadian Dept. of Energy, Mines and Resources, Ottawa, (96) p. Inc ludes Addendum dated 27 May 1977.
(2 ) D r o l e t , Jean-Paul , The Demands and L imi t a t ions Governing the Mineral Product ion o f Western Canada t o 1990, 13 Oct. 1976, Vancouver,
( 3 ) Drurnmond, A.D., and Godwin, C. I . , 1976, "Hypogene Mineral izat ion: An Empirical Evaluat ion o f A l t e r a t i o n Zoning," i n Bro:.in, A.S., ed . , Porphyry Ceposits o f the Canadian ~ o r d i l l e r d , Can. I n s t . Mining a n d K e t a l . , Spec. Vol. 15, p. 52-63.
(4 ) Mining Magazine, 1972, Progress a t S i o i l kameen, v . 126, no. 3 , (Mar), p . 167.
(5 ) P i l c h e r , S . H . , and McDougall, J . J . , 1976, "Characteristics of Some Canadian C o r d i l l e r a n Porphyry Prospects," i n Brol;~n, A.S., ed., , .
Porphyry Deposits o f t h e Canadian C o r d i l l e r a , Can. I n s t , Mining and Meta l , , Spec. Vol. 15, p. 79-82.
( 6 ) R i c h t e r , D . H . , S inge r , D . A . , and Cox, D.P., 1975, blineral Resources Map o f t h e Rabesna Quadrangle, Alaska: U.S. Geological Survey Misc. F ie ld S t u d i e s Map MF - 655K, 1 sheet , s c a l e 1:250,000.
(7) Western Miner, 1973, "The Afton D i scovery , " v. 46, no. 2 , Feb., p.36.
(8) Indus t ry sources .
( 9 ) World Mining, 1978, What's Going on i n \dorld Mining, v. 31, no. 12, p. 88.
(10) Mining Jou r . , 1979, Major Canadian Copper Deposi t , 17 hug. 1979, v . 293, no. 7513, p . 126.
(11) {dining Jou r . , 1979, Canadian Copper-Moly Discovery, 14 Sept. 1979, v . 293, no. 7517, p. 217.
Porphyry Wol ybdenun
American Metals Market, 1980, Quartz H i 11 ' s Koly Reserve Upgraded, 27 Feb. 1980, v o l . 88 , no. 39, p. 7.
Annis, R . C . , Cranstone, D . A . , and Vallee, M . , 1976, A Survey of Known Mineral Deposi ts i n Canada That Are Mot Being Mined, Canadian Dept. o f Energy, Mines afid Resources, Ottawa, (96) p. Includes Adderndurn dated 27 May 1977.
Drufimond, A . D . , and Godwin, C.I., 1976, "Hypogene Mineral izat ion: An Empirical Evalua t ion of A l t e r a t i o n Zoning," i n Brown, A.S., ed., Porphyry Deposits o f t h e Canadian Cord i l l e r a 7 C a n . I n s t . Mining and Metal. , Spec. vo l . 15, p. 52-63.
King, R.U., Shawe, D . R . , and MacKevett, E.Pl., J r . , 1973, "Plolybdenurn," i n Brobs t , D . A . , and P r a t t , W.P., editors, United S t a t e s Mineral - Resources, U.S. Geol . Survey Prof . Paper 820, p. 425-435.
M i K i n g Engineering, 1980, US and I n t e r n a t i o n a l Mineral Ikws Briefs, Jan . 1980, vo1.32, no. 1, p. 17.
P i l c h e r , S.H. and I4cDougal1, J .J., 1976, " C h a r a c t e r i s t i c s of Some Canad ian C o r d i l l e r a n Porphyry Prospec ts , " i n Brown, A.S.,ted., Porphyry Depos i t s of the Canadian c o r d i l l era , Can. Inst . and Metal. , Spec. vol . 15, p. 79-82.
Sutu lov , Alexander, 1976, Molybdenum and Rhenium, 1778-1977, Un ive r s i t y o f Conception, Ch i l e , 257 p.
Sutu lov , Alexander, 1978, I n t e r n a t i o n a l Molybdenunl Encyclopedia, 1778-1978, vol . 1, Resources and Product ion: Interrnet Pub1 i ca t ians, Sant iago , Ch i l e , 402 p.
Theodore, T.G., 1979, Personal communication.
World Mining, 1979, S i x Explora t ion Diamond D r i l l s a t Mount Emmons, June 1977, v o l . 32, no. 6, p . 101.
World Elining, 1980, Moly i n B r i t i s h Columbia, Fcb. 1930, vo l . 33, no. 2, p. 65.
(10) U.S. Bureau of Mines, 1944 , I ron tllountain Tunsten Project , Si.erra County, N - Plex., War Minerals Report No. 157, (~at iuary) . , 8 p.
(11). !.la1 1 Street Journal , 1977, Union Carbide advertisement, July 5, p. 7.
(12) Wright, Nancy, 1977, data from World Mineral Deposits Computer F i l e , U.S. Geological Survey, O f f i c e of Resource Ana1ysi.s.
I:lercury D e p o s i t s
Peterson, J.A., Bergquist, J.R., and Gassaway, J.S., 1977, Mercury i n the Conterminous United States: Computerized Data File and Computer-Plotted Map o f Occurrences, U.S. Geological Survey Open-File Report 77-859, 29 p *
Sainsbury, C . L . and ElacKevett, E.M., J r . , 1965, Quicksilver Deposits o f southwestern Alaska, U.S. Geological Survey 8 u l l . 1187, 89 p.
U.S. Geological Survey, 1977, Computerized Resources Information Bank ( C R I B ) , a mineral resources d a t a f i l e of t he U.S. Geol ogi cal Survey.
I n t r u s i v e Nickel S u l f i d e Deposits
(1) Naldrett , A. J . , 1973, Nickel S u l f i d e Deposits - Their C l a s s i f i c a t i o n and Genesis, w i t h Special Emphasis on Depos i ts o f Volcanic Association, Trans. Can. Ins t . f l i n . tilet., 76, 183-201.
( 2 ) Annis, R . C . , Cranstone, D . A . , and ValleP, M. 1976, A Survey o f Known Mineral Deposits i n Canada T h a t Are Not Being Flirted, Canadian Dept. of Energy, Mines and Resources, Ottawa, (96) p .
(3 ) Douglas, R.3 . \ J . , ed. 1970, Geology and Economic F l i neral s of Canada, Economic Geology Report No. 1, Canadian Dept. o f Energy, Mines and Resources, p. 838.
(4) M a ~ k ~ n z i e , B.W., 1968, Nickel - Canada and the World, M i n , Res. Div., Canadian Dept. o f Energy, Mines and Resources , O t t a w a , Mi n. Rept. 16, p. 176.
(5) Data from industry.
( 6 ) Laznicka, Peter, compiler, 1973, Manif i le; The University of Manitoba F i l e of Nonferrous Metal Deposi ts of the World: Manitoba Univ., Dept. Earth Sc i . , Centre Precambrian Studies Pub . 2 , 3 v. : P t . I , , 533 p.; P t . 2 , v . 1 , 698 p . ; P t . . 2 , v. 2, 767 p.
( 7 ) U.S. Geological Survzy , 1977, Computer Resources Information Bank ( C R I B ) , a mineral resource d a t a f i l e o f the U.S.G.S.
Vein Gold
(1) Annis, R . C . , Cranstone, D .G . , and ~ a l l . k , b l . , 1976, A Survey o f Known Mineral Deposits i n Canada T h a t Are Not Being !<lined, Canadian Dept. of Energy, )lines and Resources, Ottawa, 96 p. Includes addendum dated 27 May 1977.
(2) Bostock, H.S., t . lull igan, R . and Douglas, R.J.W., 1957, The Cordi 11 eran Region, i n Stockwell , C. H. , ed., Geology and Economic Minerals o f T a n a d a , Geological Survey o f Canada, p. 283-392.
(3) Lazni cka , P e t e r , compi 1 er, 1973, f~lani f i 1 e ; The University o f Manitoba F i le of NonFerrous Pletal Deposi ts of the World: Nani toha Un-iv. Dept. Earth S c i . , Centre Precambrian Studies Pub. 2 , 3 v.: P t . 1, 533 p . ; P t . 2, v . 1, 698 p . ; P t . 2, 767 p.
(-4) i . i t t l e , H.i.l., Be lyea, H.R., Stott, D.F., Latour, B.A. and Douglas, R.J.W., 1968, Economic Minerals of Western Canada, i n ;:
Douglas, R. J-Id., ed., Geology and Economic Minerals of Canada, Canadian Dept. o f Energy, Elines and Resources, p , 489-546.
(5) S i n c l a i r , B I . D . , Plorin, J.A., Craig, D.B., and Marchand, M., 1976, Mineral Industry Report, 1975, Yukon Ter r i to ry , Canadian Dept. o f Indian and Northern A f f a i r s , Ottawa, 210 p .
Mafic Volcanogenic Copper
(1) Larnicka, Peter, c o m p i l e r , 1973, Manifi le; The U n i v e r s i t y o f Mani toba File of Nonferrous Metal Deposits o f t h e \!orld; Manitoba Univ., Dept. E a r t h Sci., Cent re Precanbrian Studies Pub. 2, 3 v . : P t . 1, 533 p . ; Pt. 2, v, 1, 695p.; P t . 2, 767 p.
Fel s ic t o Intermediate Volcanogenic
(1) Laznicka, Peter, compiler, 1973, manif i le ; the University of Manitoba F i l e o f Nonferrous r-lztal Deposits o f t he Iiorld: Manitoba Univ . , Dept. Ear th Sci. , Centre Precambrian Studies Pub. 2, 3 v.: P t . 1, 533 p . ; P t . 2, v . 1, 698 p . ; P t . 2, 767 p.
( 2 ) U.S Geological Survey, 1977, Computer Resources Information Bank ( C R I B ) , a mineral resources d a t a f i l e o f the U.S.G.S.
Copper Skarn
(1 ) Douglas, R . J .W., ed., 1970, Geology and Economic Minerals o f Canada, Economic Geology Report No. 1, Dept. o f Energy, fili nes and Resources Canada, Geol. Survey of Canada, p. 838.
( 2 ) Laznicka, Peter , coxpi l e r , 1973, FSanifi l e ; The University of Manitoba F i l e o f Nonferrous Metal D e p o s i t s o f the World: i l an i toba Univ . , Dept. E a r t h Sci . , Centre Precanjbrian Studies Pub. 2 , 3 v . ; P t . 1, 533 p . ; P t . 2, v. 1, 698 p . ; P t . 2. v. 2, 767 p ,
( 3 ) Annis, R . C . , Cranston, D . A . , and Vallke, M., 1976, A Survey o f Known Mineral Deposits i n Canada T h a t Are Plot Being Mined, Canadian Dept. of Energy, Mines and Resources, Ottawa, 96 p. Includes addendum dated 27 May 1977.
(4) Pennzoil Corp., 1973, Prospectus da ted 10 May 1973.
( 5 ) Rosenkranz, R . D . , Davidoff, R.L., and Lernons, J.F., J r . , 1979, Copper a v a i l a b i l i t y - Domestic, U.S. Bureau of Mines, IC 8809, 31 p.