1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Mazama

Past Producer in Okanogan county in Washington, United States with commodity Copper
Map
XML
JSON
KML
A
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. Ownership information
  18. Reserves and resources
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10056009
MRDS ID SP00251
MAS/MILS ID 0530470848
Record type Deposit
Current site name Mazama
Alternate or previous names Lesley

Geographic coordinates

Geographic coordinates: -120.38313, 48.61455 (WGS84)
Relative position ABOUT 1.6 MI NORTHEAST OF MAZAMA

Site location context

Political divisions (FIPS codes)

Okanogan(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mazama(quadrangle 1:24,000 scale)

Robinson Mountain(quadrangle 1:100,000 scale)

Concrete(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Methow(hydrologic unit)

Upper Columbia(hydrologic accounting unit)

Upper Columbia(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Okanogan-Wenatchee National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Washington Okanogan

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 036N;036N;036N;036N 020E;020E;020E;020E 17;18;19;20 SW4 (17); SE4 SE4 (18); E2(19); W2 (20) Washington

Commodities

Commodity Importance
Copper Primary

Comments on the commodity information

  • TRACES OF MO AND W HAVE BEEN FOUND IN PHYLLIC AND PROPYLITIC ZONES, GOLD IN WIDELY SEPARATED VEINS

Materials information

Materials Type of material
Chalcopyrite Ore
Bornite Ore
Pyrite Gangue
Biotite Gangue
Chlorite Gangue
Oligoclase Gangue
Quartz Gangue
Sericite Gangue
Magnetite Gangue
Pyrrhotite Gangue

Alteration

  • (Local) Potassic
  • (Local) Phyllic
  • (Local) Propylitic

Analytical data

Result AVG 0.36% Cu

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Fawn Peak Stock
    Rock description Fawn Peak Stock

Nearby scientific data

(1) -120.38313, 48.61455
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description The Fawn Peak Stock Was Probably The Intrusive Rock Core Of An Island Arc (Riedell, 1979)
Type of structure Local
Structure name Fracturing
Type of structure Regional
Structure name Goat Peak Syncline

Ore body information

  • General form BRECCIA PIPE, STOCKWORK

Controls for ore emplacement

  • Mineralization Is Confined To Fractures And A Breccia Body. This Appears To Be Primarily A Porphyry Copper Deposit That Has No Other Metal Values. Reserves Are Given As Nearly 150 Million Tons Averaging 0.36% Cu. The Overall Waste To Ore Ratio Is 2.5:1.
  • Breccia And Fracture Zone

Comments on the geologic information

  • THE FAWN PEAK STOCK IS AN ELONGATE, NORTHWEST-TRENDING INTRUSION ALONG THE NORTHEAST SIDE OF THE METHOW RIVER VALLEY; IT IS SITUATED ALONG THE AXIS OF THE GOAT PEAK SYNCLINE. THE STOCK CONSISTS OF FINELY TO COARSELY CRYSTALLINE DIORITE, PORPHYRITIC QUARTZ DIORITE, PLAGIOCLASE PORPHYRY, AND INTRUSION BRECCIA. THE PORPHYRITIC ROCKS OCCUR ALONG THE BORDER OF THE STOCK. THE STOCK INTRUDES THE WINTHROP SANDSTONE AND THE MIDNIGHT PEAK FORMATION. THE SANDSTONE CONTAINS EPIDOTE (HORNFELS) ALTERATION. SWARMS OF PORPHYRITIC SILLS AND DIKES EXTEND AS MUCH AS 1 KM FROM THE STOCK. THE INTRUSIVE BRECCIA IS A PIPELIKE BODY AND CONSISTS OF SUBROUNDED CLASTS AS MUCH AS 10 IN. LONG OF DIORITE, QUARTZ DIORITE, ANDESITE, AND ANDESITE PORPHYRY IN A MATRIX OF PLAGIOCLASE PORPHYRY. THREE K-AR MAGMATIC BIOTITE AGES FOR THE STOCK AVERAGED 88 M.Y. ALTERED ROCK IN THE STOCK YIELD K-AR SECONDARY BIOTITE AGES OF 85.1 +/- 3.5 M.Y. AND 69.7 +/- 2.9 M.Y.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Large
Significant No

Mining district

District name Mazama

Ownership information

  • Type Owner-Operator
    Owner Centurion Mines Corp.
    Interest 100
    Home office Utah
    Year 1993
    First year 1992

Comments on the production information

  • THERE IS NO RECORDED PRODUCTION. QUARTZ VEINS 0.5 MI. TO THE SOUTH AT THE MAZAMA PRIDE MINE PRODUCED 37 TONS OF ORE IN 1931, WHICH CONTAINED COPPER AND 0.7 OZ/TON AU.

Reserves and resources

  • Type In-situ
    Estimate year 1990
    Reserves 150000000mt ore
    Remarks Reserve number probably doesn't meet normal requirements. May really be a resource number. Units uncertain. Assumed MT, but may be short tons.
    Commodity Subtype Grade units Group Importance Year
    Copper Cu 0.36 wt-pct Copper Primary 1990

Comments on development

  • EXPLORED (1990) BY VANDERBILT GOLD CORP. CONSIDERABLE DRILLING WAS CONDUCTED BY BEAR CREEK, NORANDA, INSPIRATION DEVELOPMENT CO., AND QUINTANA. BEAR CREEK AND INSPIRATION SPENT $700,000 ON DRILLING.
  • SEVERAL COMPANIES CONDUCTED DRILLING PROGRAMS. IN 1992, CENTURION MINES WAS DOING GEOLOGIC MAPPING OF PORPHYRY COPPER AREA

Reference information

Bibliographic references

  • Deposit

    DERKEY, R.E.; JOSEPH, N.L.; LASMANIS, R., 1990, METAL MINES OF WASHINGTON-PRELIMINARY REPORT: STATE OF WASHINGTON, DEPARTMENT OF NATURAL RESOURCES, DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-18, 577 P.

  • 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

    STOFFEL, K.L.; MCGRODER, M.F., COMPILERS, 1990, GEOLOGIC MAP OF THE ROBINSON MOUNTAIN 1:100,000 QUADRANGLE, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN FILE REPORT 90-5, 39 P., 1 PL.

  • Deposit

    UNPUBLISHED INFORMATION: VANDERBILT GOLD CORPERATION, 1989, MAZAMA PROJECT DESCRIPTION. THIS REPORT IS IN DGER FILES

  • Deposit

    WASH. GEOLOGIC NEWSLETTER, V. 18, NO. 1, MAR. 1990, P. 9, 17

  • Deposit

    HOLLISTER, V.F., 1979, PORPHYRY COPPER-TYPE DEPOSITS OF THE CASCADE VOLCANIC ARC, WASHINGTON: MINERALS SCIENCE AND ENGINEERING, V. 11, P. 27-28.

  • Deposit

    DERKEY, R.E., GULICK, C.W., LINGLEY, W.S., JR., 1993, WASHINGTON'S MINERAL INDUSTRY - 1992: WASHINGTON GEOLOGY, V. 21, NO. 1, P. 3-25.

General comments

Subject category Comment text
Deposit THIS DEPOSIT CONSISTS OF UNPATENTED MINING CLAIMS. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-91 Berger, Mary A. U.S. Geological Survey ADDED MODEL NAME AND NUMBER
Updater 10-JUN-92 Beougher, Dee (Spanski, Gregory T.) U.S. Geological Survey
Updater 01-OCT-93 Frank, Dave U.S. Geological Survey
Reporter 01-APR-91 Peterson, Jocelyn A. U.S. Geological Survey
Reporter 30-APR-96 Lowe, Nathan T. U.S. Bureau of Mines

Beyond USGS

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

Maps centered on this site