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Condor-Hemlock

Occurrence in King county in Washington, United States with commodities Copper, Molybdenum, Gold, Silver
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Land status
  18. Ownership information
  19. Reserves and resources
  20. Links to other databases
  21. Bibliographic references
  22. Reporter information

Geologic information

Identification information

Deposit ID 10055923
MRDS ID SP00135
Record type Site
Mineralized Area Middle Snoqualmie Area
Current site name Condor-Hemlock
Alternate or previous names Condor, Hemlock, Condor Zone

Geographic coordinates

Geographic coordinates: -121.3693, 47.49649 (WGS84)
Elevation 1158
Relative position ABOUT 2 MI NORTHWEST OF HUCKLEBERRY MOUNTAIN

Site location context

Political divisions (FIPS codes)

King(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Chikamin Peak(quadrangle 1:24,000 scale)

Snoqualmie Pass(quadrangle 1:100,000 scale)

Wenatchee(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Snoqualmie(hydrologic unit)

Puget Sound(hydrologic accounting unit)

Puget Sound(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Mt. Baker-Snoqualmie National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Alpine Lakes Wilderness(Wilderness)

Wilderness FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Washington King

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 023N 011E 11 Washington

Commodities

Commodity Importance
Copper Primary
Molybdenum Primary
Gold Secondary
Silver Secondary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Covellite Ore
Molybdenite Ore
Chlorite Gangue
Pyrite Gangue
Pyrrhotite Gangue
Quartz Gangue
Sericite Gangue

Alteration

  • (Local) Potassic, Phyllic, Propylitic

Analytical data

Result 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.

Mineral occurrence model information

Model code 79
USGS model code 21a
Deposit model name Porphyry Cu-Mo
Mark3 model number 2

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Tonalite
    Rock unit name Snoqualmie Batholith

Nearby scientific data

(1) -121.3693, 47.49649
ListMap

Economic information

Geologic structures

Type of structure Local
Structure name West Condor Fault
Type of structure Regional
Structure name NE trending belt of en echelon faults, fractures, and breccia pipes

Ore body information

  • General form STOCKWORK, BRECCIA PIPE
    Thickness 122M
    Length 305M
    Width 122M

Controls for ore emplacement

  • Shear Zones And Fractures

Comments on the geologic information

  • 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).

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Mining district

District name Snoqualmie, Burns

Land status

Ownership category National Forest
Area name Snoqualmie National Forest

Ownership information

  • Type Owner
    Owner United Cascade Mining Co., Inc.
    First year 1990

Comments on the ownership information

  • 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.

Reserves and resources

  • Type In-situ
    Estimate year 1975
    Reserves 25000000mt ore
    Total endowment 91000000mt ore
    Remarks This may be short tons rather than Metric tons. It wasn't clear in reference.
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.616 wt-pct Copper Primary 1975
    Molybdenum MoS2 0.032 wt-pct Molybdenum Primary 1975
  • Type In-situ
    Estimate year 1975
    Reserves 91000000mt ore
    Total endowment 91000000mt ore
    Remarks Reserve values may be short tons not metric tons. Units not specified in report. These reserves are for the Porter and Hemlock.
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.6 wt-pct Copper Primary 1975
    Molybdenum MoS2 0.02 wt-pct Molybdenum Primary 1975

Comments on the reserve resource information

  • FIRST RESERVE ESTIMATE IS FOR CONDOR, SECOND IS FOR PORTER AND HEMLOCK COMBINED

Comments on the workings information

  • 3 ADITS, EXTENSIVE DRILLING

Comments on development

  • ECON.COM: NO PRODUCTION HAS BEEN RECORDED, BUT THERE MAY HAVE BEEN A SMALL AMOUNT FOR TESTING.
  • PREVIOUSLY EXPLORED BY SEVERAL OTHER COMPANIES

Reference information

Bibliographic references

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • 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.

  • Deposit

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

  • Deposit

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

  • Deposit

    WESTERN MINER, 1967, WESTLAND MINES LTD.: P. 128

  • Deposit

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

  • Deposit

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

  • Deposit

    U.S. GEOLOGICAL SURVEY BULLETIN 1542-E, 1989, P. 94-97.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1991 Berger, Mary A. U.S. Geological Survey
Updater 01-AUG-1992 Frank, Dave U.S. Geological Survey
Updater 18-MAY-2009 Causey, J. Douglas U.S. Geological Survey
Reporter 01-APR-1991 Peterson, Jocelyn A. U.S. Geological Survey
Reporter 23-JUN-1994 Thurber U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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