UNITED STATES DEPARR4ENT OF THE INTERIOR ( BUREAU OF MINES)

SUMMARY REPORT

MINERAL INVESTIGATION OF THE GLACIER PEAK WILDERNESS AMD ADJACENT AREAS

CHELAN, SKAGIT, AND SbIOHOMISH COUNTIES, WASHINGTON

RY R. 5. Stotelmeyer, F, L. Johnson, E. i, McHugh,

F. E. Federspiel, D. K . Denton, Jr., and S. A, Stebbins

MLA 89-32

1982

This open f i l e report summarizes the r e s u l t s of a Bureau o f Mines wilderness study and will be incorporated in a j o i n t repor t wi th tile U.S. Geo'i ogical Survey. Tine r e p o r t i s prel iminary and has not been edited o r revietged f o r con fonn i t y w i th the Y.S. Bureau of Mines standards and nomenclature. Mork on this study was conducted by personnel froin Western Field O p e r a t i o n s Center, E a s t 360 Third Avenue, Spokaqe, Washington 99202

FOREWORD

Under the Mil derness Act (Pub1 i c Law 88-577, Sept, 3, 1964) certain

areas w i t h i n the National forests previously classified as "wilderness,"

"wi7 d," or "canoe" were incorporated i n t a the National Mil derness

Preservation System as wilderness areas. The act provides that the U.S.

Geol ogical Survey and the U,S. Bureau of Mines survey these wil derness

areas t o determine the mineral val ues, i f any, that may be present. The

act a1 so directs the results of such surveys are b be made avail able to

the public and submitted t o the President and Congress, This report

summarizes the results of the Bureau o f Mines mineral survey of the Glacier

Peak Mi1 derness and Adjacent Areas, Chelan, Skagi t, and Snohomish Counties,

klashi ngton.

CONTENTS Page .

Summary ............................................................ 4

.................................................... Introduction... 5

Mining d i s t r i c t s and minera l i zed areas. ........................... 7

Set t ing ......... .....*be.......... ........................... 7

................................... H i s t o r y and product ion 7

Geology o f the mineral deposit^.....,......^.....^....... 10

Mining claims..... ....................................... 11

Mining d i s t r i c t s * e . . . ~ . . . . t ~ O ~ ~ ~ C ~ b ~ ~ ~ . . . ~ , . i . . ~ o . 12

Sampson d i s t r i c t ......................................... 12

Chiwawa d i s t r i c t ......................................... 13

Railroad Creek d i s t r i c t ................................. 14

Stehekin d i s t r i c t ........................................ 14

Cascade district.........,....^.,...^.........^,...... 14

Minera l resources ........e......................................... 15

Selected references .........~......,.........,,...Ie............ 36

TABLES

Table 1 . Mines and prospects with est imated mineral resources i n

the Glacier Peak Wilderness and adjacent areas. ........ 16

2 . Mines and prospects w i t h p o t e n t i a l f o r discovery of

mineral resources i n t h e Glac ier Peak U i l derness

................................... and adjacent areas.. 19

3 . M i scel 1 aneous prospects and m i neral i zed areas havi ng

no minera l resource p o t e n t i a l o r not s u f f i c i e n t l y

exposed t o determine p o t e n t i a l i n the G l a c i e r Peak

Wilderness and adjacent areas .......................... 24

SUMMARY

Mineral resources, or a potential for their discovery, occur a t 34

1 ocal i ties in the Glacier Peak Wil derness and adjacent areas of tk north

Cascade Range of Washington (see plate]. Eighteen of the mineral deposits

are i n the established Hi1 derness, four are in or partly i n contiguous

RARE I I f Roadless Area Review and Eva1 uat ionf lands recommended by the

Forest Service for addition to the Wilderness (A, D and G60311, three are

i n adjacent RARE 11 lands excluded from wilderness consideration, and nine

are i n nearby roaded areas excluded from the RARE I I inventory.

Mineral cmmodities t h a t migh t be produced from the Nil derness and

recanmended additions are gold, sif ver, copper, 1 ead, zinc, molybdenum,

arsenic, cadmium, tungsten, cobalt, 1 imestone [marble), pumice, and volcanic

cinders. Mineral production from adjacent lands m i g h t include most of

these cmmodities, plus antimny, decorative stone, pyrite, si l ica, and

garnet.

By far the most important identified resource i s a porphyry copper-

molybdenum deposit a t the Glacier Peak Mine on Miners Ridge near the center

of the Wilderness; a deposit totaling nearly 2 b i l l i o n tons (1.8 billion tf

has been delineated by dri l l holes. Another deposit i n the study area

that woul d have been mineable a t 1980 prices, b u t now i s marginal , i s the

Pioneer silver, lead, zinc, copper, gold vein deposit i n RARE 11 area G6Q31

on the north side of the Wilderness.

There a re no oil and gas, geothermal , o r other mineral leases i n the

study area, No mines are operat'i'ng, b u t mineral exploration reportedly

was underway i n 1981 a t the 01 d Royal Devel opment Mine i n a RARE E I t r ac t

(D60311 southeast of the Elilderness.

The Mil derness mineral appraisal indicates t h a t the study area is

relat ively unexplored for mineral deposits. The Canadian porphyry be1 t

projects southard into the area, and only res t r ic t ive environmental

regulations w i l I preclude eventual dew1 opment of the study area mineral

depos f ts.

INTRODUCTf ON

The Glacier Peak Wilderness and adjoining areas (inel uding RARE I I

areas A, C, D , and 66031) are i n the north Cascade Range o f west-central

Washington. T h i s extremely rugged area contains rainforest vegetation on

the lower slopes and uncounted small glaciers and permanent snow fie1 ds a t

higher elevations. Glacier Peak, ri si ng several thousand feet above- other

summits, i s one of a dozen major Cascade volcanoes 1 ocated between British

Columbia and northern Cali fornia. The study area i s bounded on the north

principally by North Cascades National Park and Lake Chelan National

Recreation Area; on the e a s t by 55-mi-long (88 kin) lake Chelan; on the

south by a roaded corridor a t Stevens Pass; and on the west by areas of

logging ac t iv i t i e s eas t of Puget Sound.

Glacier Peak Mil derness encompasses 464,741 acres (188,080 ha) incf ud ing

483 acres (195 ha) of patented m i n i n g claims and m i l 1 sites. In addition,

eight tracts of adjacent roadless areas having a total of 88,495 acres

(35,814 ha) have been recommended by the U,S. Forest Service for addition

t o the Wilderness. These are classified RARE 11 W (Roadless Area Review

and Eva1 wtion, recommended wi1 derness). Another small area (1,539 acres

ar 623 ha] has been proposed as an administrative addition; it was -formerly

classified RARE IT NW {non-wilderness). The east part of the overall study

area i s i n Wenatchee National Forest, and the west i s i n Mount Baker-

Snoqualmie Forest.

Bureau of Mines field work was conducted during 1976-1979 by personnel

o f the Western Field Operations Center, Spokane, Washington. The Bureau

reviewed Ii terature, county min ing claim records, and U.S. Bureau of Land

Management records. Fiel d work consisted primarily of sampli ng, mappi ng,

and wal ua t i n g known mineral occurrences. Estimates were made of m i neral-

resource tonnage and grade. The Bureau .took 881 lode samples and numrous

reconnaissance pan samples t o check f o r placer deposits. Work was conducted

under authority of the Mil derness Act (Public Law 88-577, September 3,

1964).

Many studies have been conducted over the years concerning the mineral

deposits of the w i l derness study area. Company reports, governmnt studies,

academic theses, and individual investigations were sources o f much da ta .

About 45 references wre consulted by the Bureau of Mines authors; the

most important works are i n the selected l i s t of references.

A1 1 or parts of five m i n i n g districts are i n the wilderness study

area. The east half contains, from north to south, parts of the Stehekin,

Rail raad Creek (Hol den) , and Chiwawa ( northern Leavenworthf di str ic ts ,

The northwest corner includes part of the Cascade mining district. In

the center of the Wif derness i s the Sampson district, containing the major

ore deposft of the study area,

There was no min ing activity i n the designated Glacier Peak Mil derness

or recammended additions a t the time Bureau of Mines field examinations were

cangleted (1979) except m i n ing claim assessment work. Expl oration was

underway ( i n 1981) a t the Royal Devel opment Mine i n RARE 11 area 06031.

Elsewhere, one claim was located in 1980 a t a silver vein i n the Wilderness

near Ho1 den Lake.

MINING DISTRICTS AND MINEWIZED AREAS

Setting

History and Production

The earliest known mining claims recorded i n the study area

apparently *re located i n 1891 a t the head o f South Fork Agnes Creek

and on the divide betwen the l i t t l e Wenatchee and North Fork Sauk Rivers.

A search f o r a rail road route over the Cascade Range played a

significant role i n mineral discoveries and mine development. Mineralized

areas on Rail road Creek were noted during a route survey in 1887. 3. H.

Holden prospected the area i n 1892 and in 1896 staked what later became

the Holden Mine, the state's largest copper mine, which operated from 1938

t o 1957. Farther u p the canyon i n what i s now the Wilderness, the Crown

P o i n t molybdenum deposit was probably discovered i n 1897 or 1898, A mil I

and mine camp were constructed.

Other early claim 1 ocations i n the study area were made during 1892

on Fla t Creek i n the northwest corner of the Mil derness. That same year,

a mineralized area, which was l a t e r to be patented, was located on* Middle

Fork Cascade River i n what is now a RARE I1 area (66031). A1 sa i n 1892,

discoveries were made south o f Trinity i n the Chiwawa River drainage. The

Royal Development (Red Mountain) Mine i n the RARE 11 area fD6031) i n t h a t

v i c in iw was probably discovered a f t e r the t u r n of the century.

The Glacier Peak Mine, the most s ignif icant study area mineral deposit,

was f i r s t located as a vein occurrence about 1900 by Sampson Mining Co,

The property was obtained i n 1907 by Glacier Peak Mining and Smelting Co.

which owned i t u n t i l Ridge Mining Corp., a subsidiary of Kennecott Copper

Corp., completed i ts purchase option i n 1959, the year before Mil derness

designation for the area.

Early exploration of the property was short adi t s fo l l owing copper-rich

shear zones. Later exploration u t i l i z i ng diamond d r i l l i ng reveal ed the

deposit to be a huge porphyry copper-molybdenum occurrence. Bear Creek

Mining Go. , the exploration subsidiary o f Kennecott, completed the l a s t

confirmation dr i l l ing program i n 1959, a1 though exploratory holes and a

patent application hole Here dr i l ted a s l a t e a s 1970.

The only recorded mineral production from the Wilderness i s molybdenum

ore from the Crown Point Mine on upper Rail road Creek. Output was reported

to be 10 to 12 tons ( 9 t o 1 2 t) i n 1901 and again i n 1902, and small amounts

were produced between 1903 and I91 7.

Production of copper, s i l ver, and gold occurred between 1929 and

1940 a t the Royal Oevel oprnent Mine i n RARE 11 area D6031, south of the

Mil derness. The mil 1 and camp are outside the RARE 11 area. Toti1 output

was about 18,000 lans (16,300 t) of ore, from which approximately 215,000

1bs (98,000 kg) of copper, 17,000 oz (530,000 g) of silver, and 29 oz

(902 g) of gold were recovered.

About 7,000 tons f6,400 t ) o f pumice may have been produced near

the Royal Development between 1943 and 1947. Records are vague, but

the production was probably a1 1 from a p i t southeast of the camp, outside

the RARE 11 area.

On the n o r t h end of the Wil derness, the patented claim group of the

Johnsburg Mine extends i n t o RARE 11 area 66031. Production of a small

amount of high-grade l e a d - s i l v ~ r ore occurred i n 1953 and 1955, A11

produc"ion was probably from tha t part of the claim group inside North

Cascades National Park.

By far, the most important mineral producer i n the vic ini ty of the

Glacier Peak Wi1 derness was the Holden Mine on Railroad Creek. Between

1938 and 1957, approximately 10 million tons (9.1 mil l ion t) of ore were

mined tha t yielded mre than 212 m i l l ion tbs (96 mill i on kg) of copper, 40

million Ibs (18 million kg) of zinc, 2 million oz (62 million g) of s i lver ,

and 600,000 oz (18.3 mil 1 ion g f of go1 d. The Mil derness boundary i s a t

the western edge o f the Holden town s i te .

Geology o f the Mineral Deposits

Most of the Wilderness study area i s underlain by metamorphic rocks,

mainly gneiss of pre-Upper Jurassic age, o r by igneous rocks, principal 1y

quartz diori te and granodiori te of Tertiary age. Metal 1 ic ml'neral deposits

i n the study area are of three principal types: di sserninated sulfides,

sulfide replacement of limestone, and shear zone or vein. Most of the

important mineral ization was apparently re1 ated t o two geologic features:

the GI oudy Pass pluton of quartz diori t e , 1 ocated in the interior of the

Wilderness, and the Entiat fault, which extends from a t least 30 m i (48 kmf

south o f the study area to the plubn and perhaps beyond into the RARE I 1

areas on the north. Most af the host rock along the fault and i t s branches

i s gneiss.

Two mineral deposit ref ationships were recognized as a result of the

Bureau's evaluations. One i s the relationship of the four or five disseminated

sul fide deposits b the porphyry copper-molybdenum geol ogf c province nearby

i n Canada. The other i s a local alignment of mineral resource areas i n a

narrow belt several miles 1 ong that extends south from the Carmen su1 fide

deposit, i n the Wilderness on Swamp Creek, t o beyond the Ho'lden Mine just

outside the Wilderness. This be1 t may be on a branch of the E n t i a t faut t.

Non-metal l ic deposits of the study area are pri nci-pal ly of two types:

limestone (marble) beds on the fringes of the area, and cinders and pumice

occurrences related t o Glacier Peak volcanism.

Mining Claims

Since 1891 , about 1,300 lode c1 aims have been 1 ocated in the Glacier

Peak Wilderness, and more t h a n 300 in RARE 11 areas being considefed for

addition to the Wil derness. These total s do not include large claim blocks,

containing nearly IOU claims, t ha t periadically were staked t o cover the

GI acier Peak Mine.

As of December 1980, U.S. Bureau o f Land Management records indicate

that 74 claims of the 142-claim group a t the Royal Development Mine extend

into the Wil derness. Thirty-eight more claims o f t h a t group are i n RARE I I

area D6031, and the rest just outside. North of the Irlilderness, a claim

group on Pincer Creek may extend into RARE I1 area 66031, One other current

claim i s i n the Wilderness a t Hol den Creek.

A few scattered placer claims have been located i n the Wilderness

over the years. They were along upper Railroad Creek and on Sable Creek,

a tributary o f Company Creek. Bear Creek Mining Co, a t one time located a

large block of placer claims covering their mil 1 s i te locations along t h e

Suiattle River a t the mouth of Miners Creek, b u t those claims have been

dropped.

A total of 33 patented lode claims and one mil 1 si te, a7 1 covering

about 864 acres (350 h a ) , are found a t three places i n the Wil derness and

one i n each of RARE XI areas D6031 and G603t. Patented claim grotips i n

the Wilderness consist of 18 claims covering 360 acres (146 ha) a t the

Glacier Peak Mine in the Suiattle River drainage, 6 claims covering 120

acres (49 ha) on the Phelps Creek-Railroad Creek divide, and a claim and

mill s i t e about halfway up Phelps Creek. In RARE I1 area D6031, the Royal

Development or Red Mountain Mine consists o f 9 patented claims covering

180 acres (73 ha) a1 ong lower Phel ps Creek. RARE 11 area G6031 on Middle

Fork Cascade River has 9 claims, the Pioneer Group, covering 179 acres

(72. ha), Also, about 6 acres (2.4 ha1 o f the Johnsburg claim group i s i n

this area.

Mining Districts

Samp son District

The most important mining district i n the GI acier Peak Wilderness

study area i s the Sampson (see plate]. Situated i n the center of the

Wit derness, this small district contains only two properties, b u t one of

those, the Glacier Peak Mine, possibly contains one of the world's 'largest

copper-molybdenum Eteposi ts. The district i s i n Snohomish County immediate7 y

west of the Cascade Range crest. Access i s only by trail or helicopter.

The district has had no mineral production and i s currently inactive.

The f i r s t prospectors and claimants were l o o k i n g for high-grade vein deposits

when the district was f i r s t staked i n 1900, About the time of World Mar

I I , i t was recognized that the deposit i s a low-grade, large volume,

porphyry type. It; f s characterized by di sserninated and stockwork copper-

and-molybdenum deposition. Another orebody of this type, where grani t i c

rocks have also intruded gneiss host rock, may underlie Fortress Mountain

about two m i ( 3 km) southeast of the Glacier Peak Mine.

Chiwawa District

The Ghiwawa district includes the Chiwawa, Write, Napeequa, and Little

klenatchee River drainages. Originally, the districts were p a r t o f the

much larger Leavenworth mini ng district. Access i s by a1 1 -weather roads,

and the main mining and mineralized areas i n the Wilderness and RARE 11

tracts have relatively easy access by t r a i l , compared w i t h the rest of the

study area.

The Royal Development or Red Mountain Mine i s w i t h i n the Chiwawa

district i n RARE I1 area D6031. I t i s a mineralized breccia a t or near

the contact of granitic and metamorphic rocks. Elsewhere i n the district,

there i s potential for a porphyry copper-molybdenum deposit (Esmeralda

property) underlying upper Phetps Ridge i n the Mil derness.

Rail road Creek D i s t r ic t

Railroad Creek drains part o f the east portion o f the Glacier Peak

Wilderness and empties into fiord-like Lake Chelan, A11 material;supplies,

and personnel for the Holden Mine had to be barged or brought i n by float

plane up about 45 m i (72 km) o f the lake and then trucked 12 mi (19 km) to

the mine site. A shuttle bus i s presentJy operated between the lake and

Holden, &ich is now a church camp.

The Holden mine, the most important i n the district, i s usually

considered a vein or shear zone deposit, as i s the Crown Po in t Mine.

Steheki n District

The main part of the Stehekin mining district i s north of the

Wilderness study area. Only the par t south of the Stehekin River southerly

to the Railroad Creek mining district fs in the study area.

No mining has occurred i n the study area portion of the Stehekin

district. Considering the intensity of mineralization, i t appears tha t

this part has been l i t t l e expl ored for mineral s, probably because of the

inaccessibili ty. All main types of mineral deposits o f the study area are

present - disseminated sulfides, replacment, and shear zone or vein type,

Cascade District

About half the Cascade min ing district i s i n the study area; the rest

i s i n North Cascades National Park. Only the section containing Middle

Fork Cascade River and the 'lower part of South Fork Cascade River was

studied,

The Geological Survey has found geochemical anomalies indicative of

a metal l i ferous deposit in the South Fork drainas i n the Wil derness.

There i s almost no history of mining claim activity in that area. . Mineral

resources evaluated by the Bureau of Mines are i n or near RARE 11 area

66031, recanmended for inclusion i n the Glacier Peak Wilderness. The

Pioneer sulfide vein on private land i n the RARE I I area i s probably the

only mineral resource i n the study area that coul d be mined presently,

were i t n o t for restrictive land use regulations.

MINERAL RESOURCES

Nines and prospects having mineral resources or a potential for

discovery o f resources are listed i n tables I and 2, respectively. Table 3

l i s t s mi x e l laneous prospects, mineralized areas, and mining claims where

Bureau of Mines sampling reveal ed no mineral potential or sufficiently

exposed mineralized rock that wouf d enable a resource eval uation . The plate shows properties i n the Glacier Peak Wilderness and vicinity

that have identified resources or a potential for their discovery. The

Bureau of Mines investigation indicates that the study area i s re1 atively

unexplored for minerals. Until recently, a combinatfon of geographical

and geological factors adversely affected prospecting and exploration; the

harsh envirortmnt no doubt was one of t h e factors, but the lack of bonanza-

type 0x3 de and secondary m i neral iza t i o n resul t i ng f r m recent glaciation

and fast erosfon discouraged early prospectors. In mre recent years,

large companies capable of financi ng expl oration for huge, l ow-grade primary

deposits i n the igneous rock have been excluded from the area because of'

envi romntal restraints. In addi t i o n , del i neati ng the erratic occurrences

of the rich, podiform sulfide deposits i n the metamorphic rock requires

detailed geophysical studies, n o t available to those early prospectors.

2 5

Table I.--Mfnes and prospects wlth estimated mfneral resources f n the Glacier Peak Wilderness and adjacent areas

f Underlfned names refer to propertfes having a hlgh potenti a1 for dl scovery of addftfona? resourcesl

Tonnage l f Hap f except wher'i; Resource no. Property Type noted) classlficatton Product Grade

GI acter Peak Wilderness

48 GlacterPeatMine DIssemlnnted f .9 b l l l ion Total fdentl f l pi resource Copper 0.334 percent copper-molybdenum Molybdenum dfsulfide -015 to 0.02 percent

41.3 mll l l on Measured restricted reserve Copper ,71 prcent Molybdenum dl sul f lde ,046 percent Ciol d .015 ozf ton l-! SSlver -25 ozlton Tungsten t r loxi& .03 percent

w 46 Deer Fly (probable Dtssemlnated silver 174,000 Indicated and f nferred; St1 uer - 7 5 ozlton csr extenst on of subeconanlc Go1 d .005 ozfton

Glacfer Peak Mine) Copper .05 percent

94 M i t e Chuck Cinder Pyroclastlc 24 million I/ Indicated; Volcank ctnders Cone f cubic yardsr submargtnaf reserve

38 Ideal Fissure vefn 34,000 Indicated and fnferred; S i t ver 1.42 ozlton marginal reserve

43 Crown Point Mlne Shear zones f ,300 Measured and indicated; Go\ d trace subeconomic S i 1 ver 2.92 ozlton

Copper 2.6 percent Lead -39 percent t i nc -72 prcent Molybdenum dlsulfide ,06 percent

99 C f rcle Peak - Meadow Mountain

RARE I I Area 66031 (Forest Service recommended wilderness addi t f on1

Fissure vein I / 734.000 Indicated and inferred; Silver ( f . 5 f t wide)-' restrfcted reserve Lead

Zinc Copper Go1 d

Marbleized limestone 100 m l l lion Inferred; subeconomlc

Limestone

6.46 orfton 6.4 percent 6.5 percent '

.52 percent -015 or/ ton

Map no. -

table 1.--Mines and prospects ni t h estimated nlneral resources tn the Glacier Peak Wilderness and adjacent areas fcont.1

(Unrkrlfned names refer to propertfes havtng a high potential for discovery O f add1 tional resources)

Tonnage f except &ere Resource

Property Type notedl classtf ication Product Grade ,

RARE 1 X Area 06031 f Forest Servf ce recornended w l l derness additi on

Royal Devel opment Breccl a pipe 8.5 mil lion Inferred; ntargf nal Mine

Copper reserve Sf1 ver

Tungsten

Chlwawa River punlce Pyroclastic 5.2 million Inferred; mnrglnal Pumice [study area only) [CU yd) reserve

East segment of RARE 11 Area C6031 (Forest Servlce recmended non-wilderness)

P. I. Podl form sulffde 18,000 Indicated and Inferred; Copper mrgi nal reserve Zinc

Paradise Marble Marblef zed 1 imestane 150,000 Indicated: marglnal Ljmestane _ reserve

RARE 11 Area H6031 (Forest Service recornended non-wilderness)

Silver Queen Sul ffde (limestone A. 50 Indicated; marginal Silver replacemnt formi ng reserve Lead two podifom ore Z t nc bodies) Copper

Gold Cadmium

23 Holdenf4ine (adjacent to desf gnated nil dernessl

6, 9 Measured, subeconomic

Lands adjacent t o wilderness study area

Zinc Cadmium Silver Copper Lead

A. Shear zones 3 million Measured, fndfcated and Copper f underground) inferred; margf nal reserve Go1 d

Silver

6. Taflfngs ptle 9 million Measured; margf nal Gold reserve Sf 1 ver

copper Zinc Pyrl t e (recoverable) SIlica (free Sf021

0.4 percent ..9 ozfton

unavailable

1.06 percent 2.2, percent

5.35 ozlton 5.0 percent 2.0 percent,

.40 percent

.O1 ozlton ,Of. percent

12.0 percent ,18 percent .95 oxlton -17 percent .65 percent

1.1 percent ,06 ozlton .2 ozlton .3 percent

,048 orlton .I oztton ,07 percent - 3 percent

5.0 percent unavailable

Table 1.--Mines and prospects with estlmated mlneral resources i n the Glacfer Peak Wflderness and adjacent areas (cant.)

(Underlined names refer to properties havling a high potentlal for df scovery of addttlonal resources)

Tonnage Map f except where Resource no. Property Type noted) cl assiflcatlon Product Grade

Lands adjacent t o wtlderness study area (cont)

98 Lime Mountain MarbleTzed 1 lmestbne 400 mil 1 ion Inferred; (adjacent to RkRE I 1 subeconaic a r e a G6031)

96 Garnet Creek- Garnet placer 2,000 Inferred; Ruby Creek (two marginal reserve adjacent deposits)

garnet

Co 1I M e t r i c conuerslon: - Tons x 0.9072 = tonnes Ounces [troy) per ton x 34,285 = grams per tonne Cubic yards x 0.7646 - cubic wters Feet x 0.3048 = meters

Table 2.--Mines and prospects wt t h potential for discovery of arlneral resources in the Glacier Peak Wilderness and adjacent areas

(Properttes are not sufflcf ently exposed to enable estimate of tonnage and grade)

Sampl1 ng

Property [sample lengths are

Type Products Descrlptton and remarks tn parentheses]

Stehekln Minfng Dfstrict (Wfldernessf

35 Camn Sulfide Lead On mf neral belt extending NIneteen samples: ten ranged from 0.74 (limestone Zinc ta Holden Mine, May intersect to 6.9 percent lead (5.0 and 4.0 f t I / , replacement) Silver Copper King structure. Several respective1 yl and averaged 2.0 percefit;

Copper shall ow prospect pits. twelve ranged f r m 0.81 to 7.0 percent Cadmium byproduct rtne (4.0 and 2.0 f t , respecttvefyl and

averaged 3.0 percent; nlne ranged from 0.9 to 3.7 oz st lver per ton 11 (2.0 and 15.0 f t , respectively) and avzraged 2.1 oz; six ranged fran 0.10 to 0.53 percent copper (2.0 f t) and averaged 0.29 percent.

36 Copper King Shear zone Copper Two adits, 5 and 14-ft long. Cobalt Possible ore shoot may occur Silver byproduct a t intersection of thf s zone

w i t h the trend of the Carmen deposit, Cobalt may only be local ized,

32 Goerfcke Porphyry copper Copper S i 1 ver

Rugged terrain inhibits prospecting. On Carmen- Hol den mineral trend,

12 Coon Lake Shear zone

StehekTn Mfnlng District (outside the Wilderness Study Area)

Silver Two prospect pits on narrow, Got d by produc t quartz-bearf ng shear zone.

Seven samples: one assayed 0.34 percent cobalt, 0.11 percent copper, and 0.5 oz silver per t o n (1.2 f t i ; one assayed 0.36 percent copper and 0.3 oz silver per ton t5.8 f t ) ; one grab sample assayed 0.26 percent coba'i t.

Fifteen samples: one sample of f loat assayed 4.4 percent copper and 1.0 oz silver per ton; another sample of f loat assayed 0.9 percent copper; one chlp sample assayed 1.2 oz silver per ton (2.0 f t ) ; twelve samples of accessible parts of numerous pyritfxed areas on rldge crests were essentf a1 ly barren.

Ten samples: one grab sample assayed' 4.1 or silver per ton; two chfp samples assayed 3.0 and 1.0 oz silver per ton (0,2 and 0.1 f t , respectivelyl; nine samples assayed fran a trace to 0.01 oz gold per tun.

Table 2.--Mf nes and prospects nf t h po ten t i a l f o r cft scovery o f a l ne ra l resources i n the Glac ier Peak W i l derness and adjacent areas

(Proper t ies are no t s u f f i c i e n t l y exposed to enable est imate o f tonnage and gradel

Sampl i ng sample lengths a r e

Proper ty Type Products Descrfpt fon and remarks f n parentheses)

Chiwawa Minlng O t s t r i c t [Wilderness)

53 Copper P o i n t Shear zones and b l d Patented claims. About 14 sho r t Efghty samples: f I f t e e n assayed s l g n l f t c a n t poss ib le brecc ia S i l v e r a d i t s and numerous prospect p i t s . s i l v e r , ranging frmn 0.4 oz per t on f0.5 f t ) pipe. Copper Shear zones a r e very narrow. t o 5 .1 oz per ton (0.6 f t l i n ch ip samples,

Lead Contact o f E n t i a t f a u l t and and 8.8 oz pe r t o n i n a se lec t sample; t e n Zinc C l oudy Pass p l uton . chlp samples assayed f r a n 0.10 t o 0.47

percent copper (0.6 t o 1.0 ft, respec t i ve l y ) , and e f g h t se lec t o r grab samples assayed fram 0.15 t o 5.3 percent copper; s i x samples Contained greater than 0.75 percent lead, ranging frcm 0.76 t o 3.9 pe rcen t (5.5 and 0.6 f t , respec t i ve l y ) ; f i v e conta ined greater than 0.75 percent r f nc, ranging from 0.83 t o 2.0 percent (0.6 and 0.3 ft, respec t i ve l y ) ; e ighteen samples contained wasureab le gold, assayfng frm 0.01 t o 0.05 oz per t o n (1.0 f t ) .

56 Esmeraf da

5 7 Peacock

Porphyry copper. Copper Go1 d S i l v e r Arsenic

Ancient steam Sl ' l v e r vents (fumaroles! Gold

Copper Arsen ic

Widespread hydrothermal a1 t e r a t i o n area wf t h disseminated su l f i des , and l o c a l l y conta ln lng hfgh grade go ld and s i l v e r depos i ts a t poss lb le ancient fumaroles (steam ventsf. Workings c o n s i s t of 5 ad i ts , 2 shafts, and a t l e a s t 6 prospect p i t s ,

Forty-two samples: n i n e assayed 0.1 percent o r m r e o f copper, r ang ing frm 0.16 t o 2.2 percent (2,O and 1.2 ft, respec t i ve l y ) ; f i f t e e n samples contafned masureab le gold -- seven c h i p samples assayed from 0.01 t o 0.15 oz per ton (1.l and 1.2 f t , r e s p e c t f v e l y l , th ree se lec t samples assayed 0.04 oz, 0.14 oz,and 0.37 oz pr ton, and f i v e grab samples assayed from 0.01 to 0.04 oz Br ton; nine samples had assays rang ing grwn 0.5 to 4.8 o r s i l v e r per ton (1.0 and 1.2 ft. respec t i ve l y ) ; s i x samples had an arsenic content g rea te r than 1.0 percent, askaying as h igh as 29.0 percent i n a se lec t sample and 24.0 percent i n a ch fp sample (1.2 ft),

Small deposits. Pos sib1 e Four samples: one se lec t sample assayed extensions of Esmeral da deposit. 5.3 o r s l l v e r per ton, 0.07 oz g o l d pep Several prospect p i t s . tan, 0.51 percent copper, and 21.0 percen t

arsenfc; another sample assayed 1.4 oz s l l v e r per ton.

Table 2.--Mines and prospects -4th po ten t ta l f o r di,scouery o f mineral resources i n the Glac ier Peak Wilderness and adjacent areas

{Proper t ies are not s u f f i c i e n t l y exposed t o enable est imate o f tonnage and grade!

Sampl l ng (sample lengths a r e

Proper ty Type Products Description and remarks f n parentheses)

Chiwawa Minfng D i s t r i c t (ou ts ide the Wflderness Study ~ r e a )

79 GoldenC'lay Vef n

82 Queen Ann Unknorm Tungsten Ti tanium

Lode and p l a c e r depos l t near Eleven l o & samples: f f u e had masu reab le E n t i a t f a u l t extending i n t o t he yold; assays ranged frm 0.01 t o 0,74 oz Wilderness, Caved a d i t about per ton I n s e l e c t o r grab samples. 500 f t long, 33 ft a d i t , Reconnaissance pan samples i n d i c a t e p l a c e r 70-f t -1 ong trench, numerous resource, dozer cuts. State-owned land,

Unexplored deposf t near Entfa t Ten samples: f i v e o f s i x samples from t h e fau l t . Ti tanium may be tungsten area conta ined s i g n i f t c a n t U03; l oca l i zed . four ch ip samples, from small pods and

v e i n l e t s several inches wfde, ranged frm 0.62 percent t o 5.8 percent WO3, and a grab sample o f road-grader sweepings assayed 3.9 percent. 3ne sample dl so assayed 1.0 oz s f 1 ver per ton , and another assayed 0.01 oz g o l d p e r ton. Of four samples from t h e t i t a n f u m area 0.9 m j l e s southuest, one assayed 7.1 percent t i t an ium (2.8 f t ) and another assayed 2,3 percent (1.0 f t ) .

86 S i l v e r Lace Metamorphic Decara t f ve stone Local i z e d occurrence having rock p r e v i ~ u s productJon o f 1 ess

than 30 tons.

51 Fo r t ress Mountain

2 1 Cougar

Sampson Mining D t s t r l c t (Wilderness)

Porphyry copper Copper May be extension o f G lac ier Peak Mine.

Disseminated Go1 d Copper Z i nc

Unorganized Mining Df s t r l c t s ( U i l derness)

P y r i t i z e d rhyodac i te p l u g a t l e a s t 750 f t tn diameter. Probably extends i n t o W i l de?neSS 1,000 f t to the west. Two a d i t s 3iJ d r ~ d 4 1 f t l o n g .

None

BuMines took f i v e grab samples o f t a l us : one assayed 0.15 percent copper. O f more than 150 canpany surface samples, 25 assayed greater than 0.2 percent * copper. Several shallow d r f l l holes; the best averages 0.34 percent copper (87 ft).

Etght samples: four ch fp samples assayed from 0.01 t o 0.33 oz go ld per tan; (9.1 and 3.3 f t ) ; one assayed 0.14 percent copper ( 3 . 3 f t ) , n selezt sample assayed 0, 17 percent t i n i .

table 2.--Mines and prospects wfth potentla1 f o r dfscovery of mineral resources i n the Glacier Peak Wilderness and adjacent areas

{Properties are not suff icient ly exposed to enable estimate of tonnage and grade)

[lap no. Property TY Pe Products Description and remarks

92 Goff Unknown [ I n wit derness and RARE I I area A60311

Unorganfzed Mining Distr ic ts (Wilderness - cont.)

Copper Si'l ver Gold

Altered area of several square miles, with small, lacallzed, sul fide-beari ng shear zones. Four adits: 105-ft, 80-Ft, 10-f t , and 5-ft-long, a 62-ft trench, a t l e a s t 4 prospect pits.

Sampl l ng (sample lengths are

in parentheses)

Twenty nine samples: four samples a t the 5 f t a d l t assayed as much a s 2.5 or s i lver per ton, 0.01 oz gold pctr ton, and 0.05 percent copper in vefntets up ta 0.3 f t wIde, Company r e p r t e d 2 f t assaying 13,85 oz s i l v e r per ton, and 8 .3 percent copper, Thefr location I s vague.

2 Mount Buckindy Porphyry copper Copper Remote, glacier-covered area. The 'best to le averaged 0.337 percent Molybdenum Company dri l led five holes. copper and 0.13 percent MoS2 over 425 f t . Silver byproduct Twa intervals , !3 and 10 f t long assayed

more than 1 percent copper.

- - Pumice deposits Pyroclastic Pumice accumulations

Numerous deposits, some of which None have had production ,!n upper Chfwawa and Entiat River baslns.

----"---*--- ----- I / Metric conversion: f e e t x 0.3048 = meters; ounces ( t roy) per ton (02 per t o n ) x 34.285 = grams per tonne. -

a 0 - % P

0 CI? .- v C' mu-

0 w 2g 0'

OI- C, E m - *,- r*,

z m r c "1

S W -r Cr

2:: s w w

Hal I- -+.' G

23 = .,- E U w w r : u"l u E 0 ad. U-

x ' . - U.I w 4.J 4.J U h C

$5 =: " E - 0 w .u- L- V I r - n u m c w -.- aJ rn 41 V L k - I - v lC I0 Yl IL 0 5 C 3 aJ u)g- 2 E m C , w v w

C - O U W L F C m L dl - r j w 4 - g 2,Z.P" " g:"th 5i' o m

u s n o

I)-

% ", + 3;7=;

UI (C w 4 u

m CI m ca a, - a 2

V)

$ 3" F u- ge

0 t x w D4"

E 0 I =

- Y-V-

CI

w e o o -,.. E ST7

4.2

a 3 w VIC 0

T ; L W t l V .s - a $ ' , % ru -2 , :

m U c . ~ ~ = r - - . u h .-4.r,-.,- 0-r cr - t CL 4-0 ro arc ry) C - w --as I U a J U ~ W . Jg:?EE:.: ~ _ t v - ~ o w w u ""7

= F C * C I P L m - w 4 g - I L-W - t ~ n n, -

V) 0 T al E h - r o e 2222- L Y x

- 4 C S *-- - a 0 m - U m L I - ( n Q

mz, m u - , , VI a.-

Ir W T L l e U a, %V.- cu 0 a,---

vCL+)-cm> c . & * t = w... c w C 0 Q.-- L cr C' "3.-, Gnu C s cr iU c R I ~ I 3 0 . ~ ~ 0 W - E E W a e u E u & W- r c E x m m q z.g.rrt;= 2.;- ; 82 f=

m \ t dlclf%. T - 0 K L

S F .. r_ m L ..-

'

2 xVI u N

8 2 " " $5 E: 0 dl N w o w C, w .5rz BC E S Z S

C' Q - * ) w

2 t K I

X l a * m '0 w 21zE

53; v v ro w

o+c, azr; K " 2 2

g 2 6

2 -

g'zs

g * * s

V) - w w C: EL

u B O 3 L 3

,"- - % - u 2 L cr M

* 0

9, C

*; z 2 L

E m 2

m. m 0 E c

a m ur +.' 4 E " l . . , e m

<'zE

* M w

* 2!;e * m.- ::; W L W

+ GIsr'r E W L

Si5 2

LL

W

t

.-, w

Table 3.-Mi sce l l aneous prospects and mineral i zed areas having no m(nera7 resource po ten t ta l o r not s u f f i c i e n t l y exposed to determine potent' ial i n t he Glacfer Peak Uilderness and adjacent areas (cont,)

[Assays are considered i n s i g n i f i c a n t i f the mineral content i s not recoverable o r does no t l n d i c a t e a potent la! f o r di x o v e r y o f resources]

Map Number and type no. Name Summary o f workfngs Sample Data

Chiwawa (Leavenworth) Mfnfng D i s t r f c t l ou t s i de the Wilderness Study Rreal - cont.

6 9 Chiwaua Rf dge F a u l t zone j u s t ou ts lde the Wilderness; A 9 - f t adi t 15 ft long, s t r l k f n g N 40' E, dlpping v e r t i c a l . Zone inc ludes pods and lenses o f quar tz i n l i m n i t e - s t a f n e d sch i s t and gneiss, A t the ad i t , the zone conta4ns as much as 15 percent p y r r h o t i te.

Fet dspar

Georgie Smfth

Gold D o l l a r

James Creek

A. Five-f t -wide, l i q h t t y l i t m n f t e - None stalned shear tone i n g r a n i t i c gneiss. Zone s t r i k e s N 5" E, d ips 75" NW and includes about I 0 percent quartz s t r ingers . 8. Serpent ln ized gabbro i n t r u s i v e (Tabor and Cro~de r , 1969, and Van Diver, ,19641 o f about 0.6 mi2

S i x samples: f ou r f rwn outcropping zone, two from ad i t . No s i g n i f i c a n t assays

A. One sample: no s l g n i f i c a n t assays, 8. Two samples: no s i g n i f i c a n t assays; checked f o r plat inum

Pre-Tert lary quartz - fe ldspath ic About 24 small Ten samples: 54 t o 89 pe rcen t a1 bl t e , gneiss in t ruded by pegmati t ic dikes. prospect p i t s and 10 t o 38 percent quartz, 0 t o 10 percent Loca l l y , t he gneiss con ta ins lenses trenches muscovite, Lacks potash fe ldspa r o f b i o t i t e o r muscovite sch i s t necesssary f o r ceramics.

IntermSttent quar tz vefn o r ser ies o f A 5 6 - f t a d i t , a El even sampl es : two sel e c t pods i n decanposed schistose gneiss. caved 50 t o 100 - f t samples -- one o f qua r t z and Talc cunmn i n shear planes. thinor ad1 t, three sloughed one o f a1 te red gneiss -- assayed hematite. Spectrograph ind ica tes shaf ts 10 l o 20 f t 0'01 oz go ld p e p tan, A c h i p minerals comprfsing u l t r ama f f c rock. deep sample f r a n a d i t assayed 0.02 Dumps covered by t h l c k s o i l mantle. percent tungsten and 0.38 percent Area of in tense a c t i v i t y i n 1896 -- n i cke l many f ia ims t i e d t o " take View Stamp M i l 1 , near E n t i a t f a u l t

t lmonl te-stafned shear zone i n quartz d i o r l t e . Zone aierages 5 - f t wide and s t r i k e s N 29" E t o !# 46' E. Exposed f o r 375 f t

Reported cod1 occurrence (Cater and Crowder, 19671. Hone found. GraBen of Swauk Fom~d t fon

Tnree samples: no significant assays

Two salnples: no s i g n i f i c a n t assays

Table 3.-Mt x e l laneous prospects and mineral l zed areas having no mineral resource potentla1 o r not sufficiently exposed to determine potent ia l in t h e Glacier Peak Uilderness and adjacent areas ( con t . 1

[Assays a r e considered i n s i g n i f i c a n t I F t he mineral content i s not recoverable o r does not Ind ica t e a potent ia l f a r discovery of resources1

Map Number and type no. Name Summary of workings Sample Data

Chfwaxa (Leavenworth] Mfntng D i s t r i c t (outsfde the Yilderness Study Area) - cont .

70 Ci t t l e Giant Possibly f i r s t claim loca t ions i n the Caved adi t reported Nine samples: no s i g n i f f c a n t study a rea o r v ic in i ty . 5escribed by to be 310 f t long assays Hodges (1897, p. 79 and map). Several t r a v e r s e s of t l t t l e Glant Creek, Maple Creek, and unnamed creek south of Maple Creek showed no economic minerals. Local areas of pyrfte a1 t e r a t i o n and barren q u a r t z veins o r lenses , Adi t dump a t mouth of Maple Creek shows no mineral i zed rock.

87 Magnetite

80 Maverick

GranltSc gnelss Intruded by pe r ido t i t e Prospect p l t a t and p e g m t i t l c dikes, Dikes a r e 80 f t qua r t z vein th ick . Five f t - th ick massive quartz vern I s nearby, Minor magnettte In gneiss .

A. Two to three tons I! of manganese- Three shallow r i c h gossan fragnents on summit of prospect pf t s Maverick Peak. Probably from pod about a t gossan 20 f t i n dlarreter, Dense, black gossan w i t h minor boxwork. Some quar tz fragments. B. Pegmatite swam on south s ide of mouth of Jimy Creek. C. Three dikes which r i s e 30 to 40 f t above ground l eve l . Dikes a r e 10 t o 15 f t wide, 100 t o 200 f t long, and DO0 t o 1,000 f t a p a r t on the e a s t slope of I4ad River Canyon; d ikes are cmposed o f s i l iceous b a s a l t , Sample was from outcrop on west bank of r i v e r along the projec t ion of the nor th dike. Near Ent ia t f a u l t

Qua r t z vein exposed intenni t t e n t l y None f o r 200 f t : vein i s 3 to 6 f t wlde, s t r i k e s N 6UD to R O O U, and dips 30* NE. 1.ocal l j l i g h t l y I i ~ l a n i t e s ta ined. Country rock i s gne i s s

Sfx samples: fou r samples f r m dikes assayed 5.0 t o 5.8 percent i ron , one f r m gneiss assayed 3.8 percent I ron , one from qua r t z *ias barren

Four samples: samples of gossan and Quartz a t p l t s assayed 21.5 and 2.1 percent manganese. The two other samples, one each from the pegmatite and dike a r eas , were barren.

Two sainples: no s i g n i f f c a n t dSSdyS

Table 3.-Ml scel laneous prospects and mineral f zed a reas having no rnlneral resource potentla1 o r not sufficiently exposed to determfne potent ia l fn t h e Glacier Peak wilderness and adjacent areas (cant.)

[Assays a r e considered in s ign i f i can t i f the mineral content. i s not recoverable o r does not fndica te a potential for di scovery of resources]

Hap Number and type no. Name Sumnary of workings Sample Data

Chfwawa [leavennorth) Mining D i s t r i c t (outs ide t h e wilderness Study Areal - cont.

89 Peavine Limestone-gneiss con tac t s and None pegmatite i n t ru s ions , Small skarn zone a t one contact . Gnelss l o c a l l y conta ins highly l i m n i t e - stained zones. The clafm i s near a past-produci ng marbl e / i imestone quarry. Dense vegetation precludes t rac ing l imestone t o Hi1 derness boundary, but steep t e r r a i n l i m i t s potent ia l .

7 8 Three f

83 Yo1 canic

90 Zada

7 6 STedgehanmer Basalt plug o r d ike , l e s s than 20 f t Two prospect p i t s wide, l n t rudes gne i s s a t a s t r i k e of N 7DD W. In t rus ion r e su l t ed in a hfghly-serpentinized a rea about 50-ft across. Contact products a1 so inc lude c l i nke r - l i ke , magneti te-rich basa l t , s t r i n g e r s of asbes tos up to t / 4 in. d d e , soapstone, and a l tered pyroxenlte. tilost of t he b a s a l t grades in to t h e serpent ine , b u t some gouge I s present,

Altered a rea abaut 600 ft wide where lone exposed in road c u t on Twfn Creek road. A t o r near Ent ia t f a u l t

Altered area about 350 f t wide where None exposed along Deep Creek - Mavertck Saddle road. A t o r near En t i a t f a u l t

Df sfontlnuous, plnching and swelling tJo n e quartz v e f h in b i o t i t e gneiss. The ciudrtz i s probably syngenetic.

Seven samples: no signf f i c a n t assays

Seven samples: Two samples assayed 0.13 and 0.10 percent c o p p r -- t h e t a t t e r was across a 2.2-ft wldth

Three samples: no s i g n i f i c a n t assays

Seven samples: one contained 0.03 w r c e n t vanadiuin

Five samples: no s i g n i f i c a n t assays

Table 3.-Mf xe ' l laneous prospects and mineral f zed areas hay tng no mjneral resource p o t e n t i a l o r no t s u f f f c i e n t l y exposed t o &?termlne po ten t i a l I n t h e Glac ier Peak Wflderness and adjacent areas Icont. )

? re considered i n s i g n i f i c a n t if the mineral content Is not recoverable o r does no t f ndicate a p ~ t e n t j a l for d l x o v e r y o f resources]

Map no.

Number and type Name .a Sam 1e Data

Rai l road Creek [Holden) Mining D i s t r t c t (outsf de Wilderness Study Area) - COnt.,

2 5 Ed L, Located by J, H. Holden I n 1897. A 5 - f t a d i t E igh t samples; no s f g n i f i c a n t (a1 so known f i n e l y laminated gneiss i s a l t e r d and one prospect assays as E d i l Mine) i n a near v e r t i c a l , !I 41" E p i t

s t r i k i n g shear zone, Zone I s 240 x 70 f t and contains disseminations and v e i n l e t s o f p y r i t e and p y r r h o t i t e . An 18-fn. rhyodaci te dike i s alongside the zone f o r 40 ft.

Harbor

* r f e l Ann

Mineral Survey 712A. Claim was on a shear zone i n b l u f f a t southeast corner o f Re f r i ge ra to r Harbor Campground. Zone s t r i k e s N 35" E i n l imonf te-stained s i l f c i f i e d gneiss and i s i n t ruded by pegmatite 7 f t from p o r t a l , Gneiss i s schistose a t po r ta l b u t l i t - p a r - l i t a t face. Pegmatite occupies a f i s s u r e open as much as e i g h t inches f o r several f ee t i n t o the roof .

Adft apparent ly dr lven ta t e s t area o f l i w o n l t e s t a f n i n b l u f f . Por ta l i s i n base o f b l u f f , 15 f t from t h e Lucerne p i p e l i n e and 75 f t from Rai l road Creek. Country rock i s a t yp i ca l banded, high1 y quar t rose gneiss

Graph i t e - r i ch shear zone along a shal low-dippi f ig pegmatite lens. &$out 50 f t above the shore o f Lake Chetan and 1,000 f t northward fcan t h e Lucerne dock. The zone s t r i k e s I1 65' W , i s f a i r l y f l a t ( d i pp ing 20' 9 4 1 and i s i n gne iss count ry rock . The a d i t c rosscuts t h e pegmatite and shear zone, A c r u s t o f t l i o r i te-muscori t e s c h i s t i s on the f ~ c e

A 23- f t adf t Four samples: no s ign1 f t c a n t and two trenches, assays 10 and 15 f t l ong*

A 5 7 - f t adf t. our samples: no s i g n i f f c a n t assays

Three samples; one assays 2.0 percent t t tan iun d tax ide frcm across a 1 ,5 - f t p d of the most f i s s i l e s c h i s t i n the face, The others contalned no s i g n i f i c a n t assays.

Table 3.-Miscellaneous prospects and mfneral lzed areas havlng no mineral resource po ten t i a l o r not s u f f l c t e n t l y exposed tr, determine po ten t i a l i n t h e Glac ier Peak Wilderness and adjacent areas (cont.1

[Assays are considered i n s i g n i f f c a n t f f the mineral content I s no t recoverable o r does not i n d i c a t e a po ten t i a l for d i scovery o f resources]

Map Nurnber and type no. Naw Summary o f workings Sample Data

Stehekin Mining D I s t r i c t (Ui lderness)

I0 Col l een Numrous claims were l oca ted on F l a t None Seven samples: a sample o f Creek i n 1892 (Hodges, 1897, map n o a t frm l o w on the south fo l lowing p. 55) on h a t i s now c a l l e d s lde o f the canyon assayed Pest Fork F l a t Creek. No p r m i n e n t 0.22 percent copper. One mineral ized area was found i n the sample o f the d i ke assayed drainage except f o r a 1 5 - f t wide, 0.3 oz s i l v e r per ton, p y r i t i z e d dac i te d l ke 1,000 f t long, low on the nor th side OF the c i rque

E l B u r r i t o

High1 i n e

No rway

Paymaster (p lace r )

S d n l e Ridge

Copper and molybdenum minerals repor ted ?ran the area. B l ' o t i t e sch i s t and amphibol i t e , in terspersed ni t h lenses o f q u a r t z i t e and marble, a re a l l in t ruded by dikes o f po rphy r t t i c g ranod lor i te. P y r l t e and cha lcopyr i te are disseminated o r i n narrow s t r i nge rs i n t he granodlorf te.

LimonTte-stalned area I n schlstose, m t a v o l canic rock

A copper-bearing quartz v e i n about l - f t wide is exposed For 180 f t on the west s ide o f F l a t Creek. The vein s t r i kes N 10' E and d ips 40" SE. Quartz float, contaf;nfng py r rho t i t e , was found on the east sl ope.

O l d clafrns area a t j u n c t i o n o f Canpany and Sable Creeks

Rust-colored zones o f ' l l 'mni te- stained gneiss c u t the r i dge cres t . Zancs were sampled ahere dccossfble by he1 i cop t? r

None

None

None

One poss ib le prospect p i t fn gravel

Four samples: one assayed 0.1 percent copper across 3 - f t width.

One sample: no s ignf f i c a n t assays

One sample o f the v e i n assayed 0.39 percent copper and 0.5 oz s i l v e r per ton; t he f l o a t sample was barren.

Numerous recannat ssance pan samples showed no gold or impor tant black sands.

Four samples: one s e l e c t satnple assdyed 3.4 oz s i l v e r per ton.

Tabte 3.-Hiscel'laneous prospects and minera l lzed areas having no mineral resource po ten t fa l o r no t s u f f i c i e n t l y exposed to determine po ten t i a l i n t h e G lac ie r Peak Wilderness and adjacent areas (cont.)

[Assays a r e considered i n s i g n i f i c a n t i f the mineral content i s not recoverable o r does not i n d i c a t e a p o t e n t i a l fo r d i x o v e r y o f resources]

Map Number and type no. Name S u n a r y o f workings Sample Data

Stehekin Minfng D i s t r i c t [ou ts ide X i lderness Study Area)

1 4 Dead F ish Reportedly located f o r uranfum, Claim Hone corners were found j u s t above water l i n e . Country rock i s una l te red gnejss

Mll nneha ha

Grand Republ l c

14ichigan

H i l t Creek

Capf t a l

A 1-ft w i d e shear tone s t r i k i n g N lgD E, and dipping v e r t i c a l l y i n b f o t f t e gneiss. The zone i s 1 i g h t l y 1 irnonite-stained, w i t h 5 t o 10 percent l o c a l i r e d quartz

None

Cascade M in ing D i s t r l c t f ~ i l d e r n e s s )

Hfghly l imoni te-stained, bleached, and Prospect p l t s i l i c i f i e d shear zone i n gneiss. Zone s t r i k e s N33" E and d ips 5 t a S E

One sample: no s l g n l f i c a n t assays

One sample: no s l g n f f i c a n t assays

One sample: 0.02 o r g o l d p e r ton, and 0.4 oz s i l v e r per ton from across the 8- f t -w ide shear zone

LimonJte-stained j o i n t s f n quartz Y-shaped ad1 t. One sample: no s f g n f f i c a n t d i o r i t e , Pa r t o f Cascade Dike (Tabor, Po r ta l f s 20 F t assays 1963) on which Pioneer (Epoch i4fnel wide; s tub d r i f t s patented group i s a1 so l oca ted a r e 10 f t and

24 f t long

Geochemical copper anomaly repor ted None by Bear Creek Mining Co. i n 1957, Loca l l y minera l ized j o i n t s i n granod ior i te, and several daci t e dikes.

Cascade Mfning D i s t r i c t (RARE I! Area G603tl

Shear zone 20 f t wfde i n l imon j te - Hone s ta ined m t a v o l canic rock. Brecciated rock i n shear rone i s cetnented by c a l c i t e .

i i ~ n o n i te-stained s c h i s t w i t h l oca l tzed Prospect p i t areds o r pod$ a5 much as 2 f t i n didmeter thd t contains m i no r arnounts of s v l f i d c s - p y r r h o t l t e , chalcopyi te , dnd bo rn i t r . Possible r e s t e ~ t e n s i o n o f P ioneer (Epoclr) st ruc ture .

F ive samples: one assays 0.4 02 s i l v e r per ton

One sample: no s l g n l f i c a n t as says

One sdmpf e : 0.02 percent copper across a 1.8 f t wid th

Table 3. - M i x e l laneous prospects and mjneral l zed areas havlng no mtneral resource po ten t i s t o r no t s u f f i c f e n t l y exposed to determine po ten t i a l .fn t h e Glac ier Peak l l i lderness and adjacent areas (cont.)

[Assays are considered i n s i g n i f i c a n t i f the mineral content i s no t recoverable o r does no t i n d i c a t e a po ten t i a l for d i scovery of resources]

Map Number and type no Name Summary o f workings Sample Data

Unorganized Mining D I s t r f c t s (Wilderness)

95 Black Hawk Heavlly 1 Tmonite-stafned contact None b e t e e n s i l i c i f i e d .gneiss and granod ior i te , P y r i t e i s disseminated i n t he granod ior i t e

F i r e Greek

Lexjcon

Ruby

Totem Pass

Busted Gut

M i nor area o f I lmonite-stalned mtgmati t e None

F ive samples: No s f g n i f t c a n t assays

One sample: no s i g n i f i c a n t assays

Gneisslc b i o t i t e quar tz d i o r i t e i s i n Four ad f t s ; NI ne samples: no s i g n i f i c a n t contact ni t h a x h l st-gnei ss ccmpl ex 25 ft, 12 FF, assays i n which marble and qua r t z i t e lenses 8 f t and 5 f t are interbedded. Shearing a t contacts long i s marked by i i m n i t e s ta in . Possfble south extenston o f Holden Mine structures.

L imonite-stained patches o f x h t s t None and gneiss claimed a t varfous times

An u l t r ama f i c pod a few f e e t i n One prospect d f a w t e r . Pod i s 50 percent serpent infzed, f ine-grained mfca

p f t

and 50 percent phenocrysts o f mica books 1/4 t o 3/8 i n , across, The mica i s wathe red to a bronze co lo r . The pod i s surrounded by a ta t cose she1 1 o f cummi ngtoni t e s c h i s t ( t r emo l i t e ? ) which crops out randanly i n the pran inent ly banded gneiss count ry rock.

Unorganized Minfng D ' ls t r$c ts [ ou t s ide Wilderness Study h ~ e d

Talcose area exposed For about 180 ft Two shal low i n roadcut, Talc i s l oca l i r e d as pods prospect p i t s and lenses i n v e r t i c a l shear zones and i n roadcut as t h i n l a y e r s Confonnatlle t@ f o l i a t i o n i n the sch is tose gneiss. Lirnl ted exposures suggest the rnater id l would requ i re extensive upgrading

THO samples o f t a l u s and one of outcropping sch is t , No s i g n i f i c a n t assays

T#o samples: no s i g n i f i c a n t assays

Five specimen samples: no assays were m d e

Table 3.-Mi scel laneous prospects and mlneral i r e d areas having no mineral resource potent ia l o r not s u f f i c i e n t l y exposed to determine potent ia l i n t h e Glac ier Peak Wilderness and adjacent areas ( cont,)

[Assays a r e considered i n s i g n i f i c a n t i f the mineral content i s not recoverable or does not I n d l c a t e a p t e n t t a l f o r d i x o u e r y o f resources]

Map Number and type no. Name Sumary o f workings Sample Data

Unorganized Mining D i s t r i c t s (outs lde Wilderness Study Area) - cont.

19 Cl eopatra A l fmon i te -s ta ined shear zone i n Two prospect THO samples: no s l g n f i c a n t h i g h l y contorted, banded b i o t i t e p i t s as says sch i s t and gneiss. Zone s t r i k e s N 50" H , and dips 43" SW

6 5 Lead Junk A. S i d e r i t e ( ? I v e i n up t o 2.5 A. None Four samples: no s i g n i f i c a n t f t wide, i n quar tz -brnb lende B. Possible assays d i o r i t e country rock. Vein prospect c u t mater ia l i s abofit 50 percent s i l i c a , 50 percent limonite, and i s very dense. The sil i ca occurs i n the ma t r i x and f n braided streaks. Yeln s t r i k e s N 82' E, d i p s v e r t i c a l l y . 8. Pinchfng and swel l ing quartz vein. Loca l l y t h e wal ls are 1 i m n i t e boxwork. Vefn s t r i k e s N 50" E, d i p s 75' NW, and ' i s up t o 1 f t wide

20 Lel f a Maude A 3 f t wide shear zone s t r l k e s A 15 f t a d f t I1 53' E, and dips 53' NW i n and a prospect p r o p y l i t i c , s l i g h t l y f o l i a t e d p i t granodlor i te. Bands o f c h l o r f t e para1 1 e l the shear plane.

Four samples: no s f g n i f i c a n t assays

- -- - 1 e t r i c conversion: e e t x .

IficheS x 2.54 = cent imeters; Tons x 0,9072 = tonnes

SELECTED REFERENCES

Carl thers, W . , 1946, Pumice and pumicite occurrences of Washington: Washington Division of Mines and Geology Report of Investigation 15, 78 p.

Danner, W, R., 1966, Limestone resources of western Washington: Washington Division of Mines and Geol ogy Bul l e t in 52, 414 p.

Grant, R. A,, 1969, Chemical and physical contra1 s f o r base metal deposi tSon i n t he Cascade Range of Washi ngton: Washington Division o f Mines and Geology Bullet in 58, 107 p.

Hodges, L, K., 1897, Mining i n t h e Pacific Northwest: Sea t t l e Post- Intel l igencer, 7 ibrary no. 622,H, p, 5-83,

Horton, F. W., 1916, Molybdenum; i t s ores and their concentrations: U.S. Bureau of Mines Bul le t in 111, p. 79-83.

Northwest Mini ng Journal , 1909, Mineral Resources of Washi ngton: Northwest Mining Journal Company, Sea t t l e , Washington special A.Y.P.E. ( s i c ) number.

Soregarol i , A. E. , and Whi t ford , D. F, , 1976, "Brenda", i n Porphyry Deposits of t h e Canadian Cordil lera: Canadian In s t i t u t e of 'Ri-ning and Metaflurgy, special volume 15, 510 p.

Mi1 lms, E o P., 7941, Stoping with diamond dr i t 1 blasthof e s a t the Holden Mine: University of Washington B.S. thesis, 99 p.

E X P L A N A T I O N

m:.:.:.:.:.:. ..*.,.... ,i.LL....... .... ,-

Roadtess area bolindary

..L * .

Adit, fa&d adit a

Shdft X

Prohpect pit, trench, or open cut

-B. Property liaving indentilied mineral resources or potential res~urcc .~ -

4pproximate tramway site

bymbol mdicaies.resources or po1,cntial for that commodity

Au-gold Ag-silver Cu-copper Pb -itad Zn - zin c

Asb-asbestos

Misirs dr~u yruaprrii,

6. Snowbird Prospect 7, Tobique Prospect 8, hlarmot No. 1 Prospect Au,ApCu,Zn 9. Marmot No, 2 Prospect 10,' Montmse Prospect Au 1 I, Slivkesperre Prospect Au,Ag,Cu,Pb,Zn 12' P~on Prospect 13, Wliistler Prospect Au,AgCu,Pb,Zn 14, Hlldr Proswct Au,A&Cu,Pb,Zn 15. EuTc);~ Pr5spcct #.&ARCu,'&, 16, P~ca Prospect Au,Ag,Cu,Pb,Zn 17. Hydra No. :! Prospect Ag,Cu,Pb.Zn 18. Tuscola Prospect Au,Ag,Cu,Pb,Zn 19;' PIlilo Prosp~ct Au,Ag,Cu,Pb.Zn

38, Monte C 39. Ouidd Pr - 40. Cornet ill 41, Nelsor PI 42. Ranpcr P 43. CI.,e'fr P 44. Seventy-': : 45. Ibex No. 46. Iron DaIr 47. Iron bias

20, Portland No, 2 hospect Au,Ag,Cu,Pb,Zn 48. LincoIn r 21. Washington Prospect Ati,Ag,Cu,Pb,Zn 49. Liberty F 22. Ncw Discovery Mine Au.Ag,Cu,Pb,Zn SO. Sldncy R1 23. Pr~de o r t h ~ hrou.ltains Elnc Au,Ag,Cu,Pb,Zn 5 1 . Shendan 24. Bde Line Prospect 52. dounta~n 25, Ptarmigan Prospect Au,Ag,Cu,Pb,Zn 53. Hdnnah 1 26. Meridian Prospect Au,Ag,Cu,Pb,Zn 54. Emnu M 27. Potomdc Prospect Au,Ag,Cu,Pb,Zn 55. Seventy-1 28, Pride of the Woods hlinc 56. Conrcress 29, IXL Prospect Au,Ag 57. Boston-A 30. Pusl!er Prospect 58, Olrvcr and 31, Portland N0.91 rrospccl Au,Ag,tu,Yo,Ln jg. Zeta Mi 3 2 Clam Prospect Au,Ag,Pb 60. Jenny D. 33. iriyslery hime Au,A&Cu,Pb,fn

I