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Mammoth Mine

Past Producer in Whatcom county in Washington, United States with commodities Gold, Silver, Lead, Zinc, Arsenic
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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. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10047782
MRDS ID M700062
Record type Site
Current site name Mammoth Mine
Alternate or previous names Claims: Mammoth, Iron Cross, Keynote, Hecla, Gold Leaf
Related records 10156873, 10093097

Geographic coordinates

Geographic coordinates: -120.71509, 48.75315 (WGS84)
Elevation 1699
Relative position ABOUT 1.3 MI SOUTH OF WINDY PASS

Site location context

Political divisions (FIPS codes)

Whatcom(county)

Washington(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pasayten Peak(quadrangle 1:24,000 scale)

Robinson Mountain(quadrangle 1:100,000 scale)

Concrete(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Skagit(hydrologic unit)

Puget Sound(hydrologic accounting unit)

Puget Sound(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 Whatcom

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 038N 017E 35 Washington

Comments on the location information

  • UNSURVEYED. ON EAST SIDE OF BONITA CREEK, 0.75 MI NORTH OF JUNCTION WITH SLATE CREEK.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Tertiary
Zinc Critical Tertiary
Arsenic Critical Tertiary

Comments on the commodity information

  • PRESENCE OF TELLURIDES INDICATED IN EARLY REPORTS, BUT THIS HAS NOT BEEN VERIFIED

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore
Sphalerite Ore
Quartz Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result SAMPLES FROM MAMMOTH VEIN AVERAGED 0.68 OZ/TON AU, 1.212 OZ/TON AG. A 20-IN.-THICK VEIN SHOWED 0.701 OZ/TON AU, 0.848 OZ/TON AG.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Harts Pass Group, Harts Pass Formation;Harts Pass Group, Harts Pass Formation
    Rock description Harts Pass Group, Harts Pass Formation;Harts Pass Group, Harts Pass Formation

Nearby scientific data

(1) -120.71509, 48.75315
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Jur-Cret Fold And Thrust Belt
Type of structure Local
Structure description Faults (N45-60w, 40-55ne) Offset Vein As Much As 25 Ft

Ore body information

  • General form VEINS
    Strike N70-80E
    Dip 45N
    Thickness 1.02M

Comments on the geologic information

  • SEDIMENTARY ROCKS WERE DEPOSITED BY TURBIDITY CURRENTS

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1895
Discoverer G.C. Mathews Et Al.
Year of first production 1898
Year of last production 1942

Mining district

District name Slate Creek District

Land status

Ownership category National Forest
Area name In Mount Baker National Forest

Ownership information

  • Type Operator
    Owner Mammoth Gold Mining Co.
  • Type Owner
    Owner Mrs. Virginia Pierson, Tucson, Ariz.

Comments on the production information

  • TOTAL PRODUCTION POPULARLY REPORTED TO BE MORE THAN $1 MILLION BUT MOEN ESTIMATED A TOTAL PRODUCTION OF $544,750.

Workings at the site

  • Type of workings Underground
    Length 685.8M

Comments on the workings information

  • 5 LEVELS OF WORKINGS, 3 CAVED ADITS

Reference information

Bibliographic references

  • Deposit

    MOEN, W.S., 1969, MINES AND MINERAL DEPOSITS OF WHATCOM COUNTY, WASHINGTON: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 57, P. 112.

  • Deposit

    HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 178.

  • 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. 561.

  • Deposit

    STOFFEL, K.L., AND MCGRODER, M.F., 1990, GEOLOGIC MAP OF THE ROBINSON MTN. 1:100,000 QUADRANGLE, WASHINGTON: WASHINGTON DIVISION OF GEOLOGY AND EARTH RESOURCES OPEN-FILE REPORT 90-5, SCALE 1:100,000.

  • Production

    MOEN, W.S., 1969, P. 111; HUNTTING, M.T., 1956, P. 178; GRANT, 1976, P. 29

General comments

Subject category Comment text
Deposit QUARTZ FISSURE VEIN RANGES FROM 2-40 IN. THICK (AVERAGES 20 IN.) IN UPPER LEVEL, FROM 1-24 IN. THICK IN LOWER LEVEL.
Deposit 5 PATENTED CLAIMS. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1981 Caress, Mary E. (Evarts, Russ) U.S. Geological Survey
Updater 01-APR-1991 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site