Mammoth Mine

The Mammoth Mine is a gold and silver mine located in Whatcom county, Washington at an elevation of 5,574 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Mammoth Mine
Secondary: Claims: Mammoth
Secondary: Iron Cross
Secondary: Keynote
Secondary: Hecla
Secondary: Gold Leaf

Commodity

Primary: Gold
Primary: Silver
Tertiary: Lead
Tertiary: Zinc
Tertiary: Arsenic

Location

State: Washington
County: Whatcom
District: Slate Creek District

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: In Mount Baker National Forest

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Mrs. Virginia Pierson, Tucson, Ariz.

Owner Name: Mammoth Gold Mining Co.

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1898
Year Last Production: 1942
Discovery Year: 1895
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

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

Mineral Deposit Model

Model Name: Polymetallic veins

Orebody

Form: VEINS

Structure

Type: R
Description: Jur-Cret Fold And Thrust Belt

Type: L
Description: Faults (N45-60w, 40-55ne) Offset Vein As Much As 25 Ft

Alterations

Alteration Type: L
Alteration Text: Oxidation

Rocks

Not available

Analytical Data

Analytical Data: 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.

Materials

Ore: Sphalerite
Ore: Gold
Ore: Pyrite
Ore: Galena
Ore: Chalcopyrite
Gangue: Quartz

Comments

Comment (Production): TOTAL PRODUCTION POPULARLY REPORTED TO BE MORE THAN $1 MILLION BUT MOEN ESTIMATED A TOTAL PRODUCTION OF $544,750.

Comment (Commodity): PRESENCE OF TELLURIDES INDICATED IN EARLY REPORTS, BUT THIS HAS NOT BEEN VERIFIED

Comment (Location): UNSURVEYED. ON EAST SIDE OF BONITA CREEK, 0.75 MI NORTH OF JUNCTION WITH SLATE CREEK.

Comment (Deposit): QUARTZ FISSURE VEIN RANGES FROM 2-40 IN. THICK (AVERAGES 20 IN.) IN UPPER LEVEL, FROM 1-24 IN. THICK IN LOWER LEVEL.

Comment (Workings): 5 LEVELS OF WORKINGS, 3 CAVED ADITS

Comment (Geology): SEDIMENTARY ROCKS WERE DEPOSITED BY TURBIDITY CURRENTS

Comment (Deposit): 5 PATENTED CLAIMS. ; INFO.SRC : 1 PUB LIT

References

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

Reference (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.

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. 561.

Reference (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.

Reference (Production): MOEN, W.S., 1969, P. 111; HUNTTING, M.T., 1956, P. 178; GRANT, 1976, P. 29

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.