Mammoth Mine

The Mammoth Mine is a gold and silver mine located in Humboldt county, Nevada at an elevation of 6,673 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: National Mammoth Mining Co.

Commodity

Primary: Gold
Primary: Silver

Location

State: Nevada
County: Humboldt
District: National Mining District

Land Status

Land ownership: Private
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.

Holdings

Not available

Workings

Not available

Ownership

Owner Name: National Mammoth Mining Co., Whelchel
Years: 1912 -

Owner Name: Whelchel Mines Reopened Mammoth Portal And Retimbered
Years: 1962 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1925
Discovery Year: 1925
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Basin And Mountains

Mineral Deposit Model

Model Name: Hot-spring Hg

Orebody

Form: TABULAR

Structure

Not available

Alterations

Alteration Type: L
Alteration Text: Clay

Rocks

Name: Rhyolite
Role: Host
Age Type: Host Rock
Age Young: Pliocene

Analytical Data

Analytical Data: ORE ASSAYED $100/TON AG AND $2-$3 IN AU IN 1911

Materials

Ore: Gold
Ore: Silver
Ore: Pyrite
Gangue: Quartz

Comments

Comment (Deposit): THREE TUNNELS WERE DRIVEN BY THE NATIONAL MAMMOTH MINING CO. NEAR THE CLAIM BOUNDARIES OF THE NATIONAL MINES CO. ONE VEIN IS CONSIDERED TO BE THE SOUTHERN EXTENSION OF THE NATIONAL VEIN. IN 1962, WHELCHEL MINES REOPENED THE MAMMOTH PORTAL AND DID SOME RE-TIMBERING, AND SANK 2 EXPLORATURY WINZES. ; INFO.SRC : 1 PUB LIT

Comment (Deposit): Discovery Year: EARLY 1900'S

Comment (Geology): GEOL.COM: VEIN IS 3 FEET WIDE AND CONSISTS OF CLAY GOUGE WITH BROKEN QUARTZ SEAMS

Comment (Production): 1911 ORE ASSAYED $100/TON AG AND $2-$3/TON AU.

Comment (Workings): 3 TUNNELS, EXPLORATORY WINZES

References

Reference (Deposit): LINDGREN, W., 1915, GEOLOGY AND ORE DEPOSITS OF THE NATIONAL MINING DISTRICT, NEV: U.S.G.S. BULL. 601

Reference (Deposit): WILLDEN, R., 1964, GEOLOGY AND MINERAL DEPOSITS OF HUMBOLDT COUNTY, NEV: BUREAU OF MINES BULL 59.

Reference (Deposit): WHELCHEL MINES NEWS, 1963, VOL 1, NO 1, CALDWELL ID., MCDERMITT, NEV.

Reference (Deposit): NBMG MINING DISTRICT MAP FILES, FILE (33

Reference (Production): WILLDEN, R., 1964

Nevada Gold

Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.