Keystone Mine

The Keystone Mine is a gold mine located in Pennington county, South Dakota at an elevation of 4,400 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 Mine

Commodity

Primary: Gold
Secondary: Silver

Location

State: South Dakota
County: Pennington
District: Keystone 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: Black Hills National Forest

Holdings

Not available

Workings

Type: Underground

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Discovery Year: 1892
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Missouri Plateau, Unglaciated

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Silver
Ore: Gold
Gangue: Pyrrhotite

Comments

Comment (Workings): LARGEST ORE SHORT DEVELOPED, THREE TOTAL; 200 FT. DEPTH IN KEYSTONE SHAFT. CROSSCUTS FROM THE HOLY TERROR MINE AT 500 FT., 700 FT., AND 1000 FT. LEVELS

Comment (Deposit): KEYSTONE VEIN APPARENTLY PARALLEL TO VEINS IN HOLY TERROR, BULLION AND COLUMBIA MINES

Comment (Production): INCLUDES PRODUCTION FOR HOLY TERROR MINE

References

Reference (Deposit): ROBERTS, W. L., AND RAPP, GEORGE, 1965 , MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18

Reference (Deposit): US BUREAU OF MINES, 1955 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2 , BUREAU OF MINES INFORMATION CIRCULAR 7707 .

Reference (Deposit): US GEOLOGICAL SURVEY, US BUREAU OF RECLAMATION, AND SOUTH DAKOTA GEOLOGICAL SURVEY, 1975 , MINERAL AND WATER RESOURCES OF SOUTH DAKOTA, SOUTH DAKOTA GEOLOGICAL SURVEY BULLETIN 16 .

Reference (Production): U.S. GEOLOGICAL SURVEY, U.S. BUREAU OF RECLAMATION, AND SOUTH DAKOTA GEOLOGICAL SURVEY, 1975 , MINERAL AND WATER RESOURCES OF SOUTH DAKOTA, SOUTH DAKOTA GEOLOGICAL SURVEY BULLETIN 16

Reference (Reserve-Resource): US BUREAU OF MINES, 1955 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2 , BUREAU OF MINES INFORMATION CIRCULAR 7707

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