Keystone Group 1880

The Keystone Group 1880 is a gold, copper, and silver mine located in Sierra county, New Mexico at an elevation of 6,900 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: Keystone Group 1880
Secondary: Claims Patented In 1902
Secondary: Keystone
Secondary: Great South West

Commodity

Primary: Gold
Primary: Copper
Primary: Silver

Location

State: New Mexico
County: Sierra
District: Black Range 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

Type: Surface/Underground

Ownership

Owner Name: U.S. Treasury Mines Co.
Home Office: Chloride, N.M.
Years: 1948 -

Owner Name: Edward James
Home Office: Chloride, N.M.
Years: 1948 -

Production

Not available

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1880
Year Last Production: 1948
Discovery Year: 1880
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: Mexican Highland

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: L
Description: Deposit Occurs Along A Major North-Striking Fault Zone Which Separates The Black Range To The West From A Well-Defined Graben Valley To The East.

Alterations

Not available

Rocks

Name: Andesite
Role: Associated
Age Type: Host Rock
Age Young: Pliocene

Name: Andesite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Analytical Data

Not available

Materials

Ore: Gold
Ore: Chalcopyrite
Ore: Argentite
Ore: Chlorargyrite
Ore: Silver
Ore: Malachite

Comments

Comment (Deposit): 2 PATENTED CLAIMS MINERAL SURVEY NUMBER 1096 COVERING 39.66 ACRES.

Comment (Geology): FOR REGIONAL GEOLOGY SEE BLACK RANGE DISTRICT.

Comment (Workings): WORKINGS REPORTED IN 1934 INDICATE SURFICIAL WORKINGS OF A FEW PITS AND OPEN CUTS. REPORTS REFER TO A 100 FT. LEVEL OF A SHAFT AND A STOPE LENGTH OF 150 FT.

Comment (Location): LOCATED SOUTH OF THE GREAT REPUBLIC MINE ALONG POVERTY CREEK AND WITHIN THE GILA NATIONAL FOREST.

Comment (Production): APPROXIMATE VALUE OF PRODUCTION FROM 1880 TO 1932 WAS REPORTED TO AMOUNT TO 5000 DOLLARS.

References

Reference (Production): G.T. HARLEY, 1934 P. 78

Reference (Deposit): NMBMMR GENERAL FILE DATA

Reference (Deposit): KELLEY, V.C., 1955 NMGS SIXTH FIELD CONFERENCE, GEOLOGIC MAP OF SIERRA COUNTY REGION, N.M.

Reference (Deposit): HARLEY, G.T., 1934 NMBMMR BULL 10, P. 72-80

Reference (Deposit): LINDGREN, W., GRATON, L.C., AND GORDON, C.H., 1910 USGS PP 68, P. 260-263

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