Mammoth Mine

The Mammoth Mine is a copper mine located in Elko county, Nevada at an elevation of 7,201 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

Commodity

Primary: Copper
Secondary: Silver
Secondary: Gold

Location

State: Nevada
County: Elko
District: Contact (48)

Land Status

Not available

Holdings

Not available

Workings

Type: Underground

Ownership

Owner Name: Nevada Copper Co.
Years: 1968 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1896
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Columbia Plateau
Physiographic Section: Snake River Plain

Mineral Deposit Model

Model Name: Skarn Cu

Orebody

Form: TABULAR

Structure

Type: L
Description: Granodiorite Stock With Assoc. Faults, Fractures

Alterations

Alteration Type: L
Alteration Text: Silicification, Oxidation (?)

Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Jurassic

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Jurassic

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Jurassic

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Bornite
Ore: Chalcocite
Ore: Copper
Ore: Chrysocolla
Gangue: Actinolite

Comments

Comment (Production): PRODUCTION WAS $5000 TO $100,000 WORTH

Comment (Workings): TUNNEL

Comment (Development): PATENTED CLAIM. PRIOR TO 1926, GREY COPPER CORP. SHIPPED FROM THESE PROSPECTS 240 TONS ORE CONTAINING 7.7% CU AND 8 OZ/TON AG AND $0.82/TON AU. THE DEPOSITS ARE SIMILAR IN CHARACTER TO THE SILVER CIRCLE AND RATTLER LODES.

Comment (Deposit): VEINS

Comment (Deposit): PRIOR TO 1926, GRAY COPPER CORP. SHIPPED FROM THESE PROSPECTS 240 TONS OF ORE CONTAINING 7.7% CU AND 8 OZ/TON AG AND $.82/TON AU. THE DEPOSITS ARE SIMILAR IN CHARACTER TO THE SILVER CIRCLE AND RATTLER LODES. TO THE SOUTH WITHIN THE GRANODIORITE, SEVERAL VEINS TREND N 10-25 E, TRANSVERSE TO THE CONTACT. THEY ARE NAMED THE JUNCTION VEIN (EXTENDING SW FOR 2 MILES TO THE IVY WILSON GROUP) AND THE OLD ABEVEIN (EXTENDING FOR 3,500 FEET AND HAVING A WIDTH OF UP TO 40 FT. OR MORE) (SCHRADER, 1935, P 33-4). THE MAMMOTH CLAIMS WERE LOCATED IN 1896 BY MR. BOURNE OF WELLS, NEV. (SCHRADER, 1912, P 103). THE AREA IS DEVELOPED BY THE HELEN B. SMITH TUNNEL WHICH STARTS IN GRANODIORITE ON THE HELEN B. SMITH PATENT. THE TUNNEL TRENDS N 62 W OF THE HIGHLAND NO. 5 CLAIM AND IS 600 FT BELOW THE SURFACE AT THIS POINT. THE TUNNEL ENCOUNTERS MINERALIZED LIMESTONE AT 1,205 FT. MINERAL SURVEY NO. 4235 ; INFO.SRC : 1 PUB LIT

References

Reference (Deposit): SMITH, R.M. (1976) MINERAL RESOURCES OF ELKO CO., NEV: USGS OFR 76-56, P 39-45

Reference (Deposit): SCHRADER, F.C. (1935) THE CONTACT MINING DISTRICT, NEVADA: USGS BUL. 847-A

Reference (Deposit): HOPE, R.A. & COATS, R.R. (1976) PRELIM. GEOLOGIC MAP OF ELKO CO., NEV: USGS OFR 76-779

Reference (Deposit): SCHRADER, F.C. (1912) A RECONN. OF THE JARBIDGE, CONTACT, AND ELK MT. MINING DISTRICTS, ELKO CO., NEVADA: USGS BUL 497.

Reference (Production): SMITH, R.M. (1976)

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.