Condor-Hemlock

Site Name

Primary: Condor-Hemlock
Secondary: Condor
Secondary: Hemlock
Secondary: Condor Zone

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Commodity

Primary: Copper
Primary: Molybdenum
Secondary: Silver
Secondary: Gold

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Location

State: Washington
County: King
District: Snoqualmie, Burns

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Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: Snoqualmie National Forest

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Holdings

Not available

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Workings

Not available

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Ownership

Owner Name: United Cascade Mining Co., Inc.
Years: 1990 -

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Production

Not available

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Deposit

Record Type: Site
Operation Category: Occurrence
Deposit Type: porphyry Cu
Operation Type: Unknown
Years of Production:
Organization:
Significant: N

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Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Northern Cascade Mountains

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Mineral Deposit Model

Model Name: Porphyry Cu-Mo

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Orebody

Form: STOCKWORK, BRECCIA PIPE

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Structure

Type: R
Structure: NE trending belt of en echelon faults, fractures, and breccia pipes

Type: L
Structure: West Condor Fault

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Alterations

Alteration Type: L
Alteration: Potassic, Phyllic, Propylitic

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Rocks

Name: Andesite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Andesite
Role: Associated
Age Type: Host Rock
Age Young: Miocene

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Analytical Data

Analytical Data: SECONDARY ENRICHED ZONE: 1.66% Cu, >1 OZ/TON Ag, $.75 Au. CONDOR RESERVES AVG 0.616% Cu, 0.032% MoS2, $.40-1.25 Au+Ag. PORTER AND HEMLOCK RESERVES AVG 0.6-0.8% Cu, 0.02-0.05% MoS2.

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Materials

Ore: Chalcopyrite
Ore: Covellite
Ore: Chalcocite
Ore: Molybdenite
Gangue: Quartz
Gangue: Chlorite
Gangue: Sericite
Gangue: Pyrrhotite
Gangue: Pyrite

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Comments

Comment (Geology): OF THE NUMEROUS MINERALIZED ZONES IN THE MIDDLE FORK SNOQUALMIE SYSTEM (LIVINGSTON, 1971, P. 152-153), THE CONDOR-HEMLOCK CONTAINS THE BEST DEMONSTRATED RESERVES, THE DEPOSIT IS OPEN AT DEPTH (BELOW 1495 FEET). THE CONDOR-HEMLOCK ZONE IS IN THE SNOQUALMIE BATHOLITH, NORTHERN PHASE GRANODIORITE AND TONALITE THAT CONTAINS BIOTITE AND HORNBLENDE; THE ROCKS ARE LIGHT COLORED, MEDIUM CRYSTALLINE, AND MOSTLY EQUIGRANULAR AND HAVE HYPIDIOMORPHIC TEXTURE. THE ROCKS ARE COARSELY JOINTED AND CONTAIN BIOTITE AND HORNBLENDE AND LOCALLY CLINOPYROXENE. AGE OF THE NORTHERN PHASE IS ABOUT 25 M.Y. BASED ON INTERPRETATION OF NUMEROUS DISCORDANT K-AR AGES OF BOTH HORNBLENDE AND BIOTITE (TABOR AND OTHERS, 1982, P. 8).

Comment (Ownership): BOTH PATENTED AND UNPATENTED CLAIMS ARE OWNED (1990) BY UNITED CASCADE MINING COMPANY, INC. THE DEPOSIT WAS EXPLORED BY ANACONDA COPPER CO., HOWE SOUND CO., CLIMAX MOLYBDENUM CORP., ANACONDA CO., BEAR CREEK MINING CO., CITIES SERVICES MINERALS CORP., WESTLAND MINES LTD., NATURAL RESOURCES DEVELOPMENT CORP., HOUSTON OIL AND MINERALS, AND ELECTRAS RESOURCES.

Comment (Development): ECON.COM: NO PRODUCTION HAS BEEN RECORDED, BUT THERE MAY HAVE BEEN A SMALL AMOUNT FOR TESTING.

Comment (Development): PREVIOUSLY EXPLORED BY SEVERAL OTHER COMPANIES

Comment (Reserve-Resource): FIRST RESERVE ESTIMATE IS FOR CONDOR, SECOND IS FOR PORTER AND HEMLOCK COMBINED

Comment (Workings): 3 ADITS, EXTENSIVE DRILLING

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References

Reference (Deposit): GUALTIERI, J.L.; THURBER, H.K.; MILLER, M.S.; MCMAHAN, A.B.; FEDERSPIEL, F.F.,1975, MINERAL RESOURCES OF ADDITIONS TO THE ALPINE LAKES WILDERNESS STUDY AREA, CHELAN, KING, AND KITTITAS COUNTIES, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 75-3, 161 P., 2 PL., P. 51-61.

Reference (Deposit): HUNTTING, M. T., 1956, INVENTORY OF WASHINGTON MINERALS-PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, 428 P.; V. 2, 67 P.

Reference (Deposit): LIVINGSTON, V.E., JR., 1971, GEOLOGY AND MINERAL RESOURCES OF KING COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 63, 200 P., 8 PL.

Reference (Deposit): MC INTYRE, A.W., 1907, COPPER DEPOSITS OF WASHINGTON: AMERICAN MINING CONGRESS, 9TH ANNUAL SESSION, REPORT OF PROCEEDINGS, P. 238-250.

Reference (Deposit): PURDY, C.P., JR., 1951, MOLYBDENUM OCCURRENCES OF WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY REPORT OF INVESTIGATIONS 18, 118 P., 6 PL.

Reference (Deposit): WESTERN MINER, 1967, WESTLAND MINES LTD.: P. 128

Reference (Deposit): UNPUBLISHED INFORMATION: GRANT, ALAN R., 1965, PRELIMINARY REPORT MIDDLE FORK SNOQUALMIE AREA, EASTERN KING COUNTY, WASHINGTON. THIS REPORT IS IN DGER FILES.

Reference (Deposit): DERKEY, R.E., JOSEPH, N.L., AND LASMANIS, RAYMOND, 1990, METAL MINES OF WASHINGTON - PRELIMINARY REPORT: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, P. 111-112.

Reference (Deposit): U.S. GEOLOGICAL SURVEY BULLETIN 1542-E, 1989, P. 94-97.

Reference (Deposit): HOLLISTER, V.F., 1979, PORPHYRY COPPER-TYPE DEPOSITS OF THE CASCADE VOLCANIC ARC, WASHINGTON: MINERALS SCIENCE AND ENGINEERING, V. 11, P. 32.

Reference (Deposit): GRANT, A.R., 1969, CHEMICAL AND PHYSICAL CONTROLS FOR BASE METAL DEPOSITION IN THE CASCADE RANGE OF WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 58, 107 P.

Reference (Deposit): FRIZZELL, V.A., JR.; TABOR, R.W.; BOOTH, D.B.; ORT, K.M.; WAITT, R.B., 1984, PRELIMINARY GEOLOGIC MAP OF THE SNOQUALMIE PASS 1:100,000 QUADRANGLE, WASHINGTON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 84-693, 42 P., 1 PL.

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Washington Gold

"Where to Find Gold in Washington" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Arizona. Read more: Where to Find Gold in Washington.