Mine detail: Keystone Mine

Location:	Pennington County, South Dakota, United States, North America
Lat / long:	45.89829, -103.41947
dep_id:	10055456
mrds_id:	SD02008
Commodity type:	metallic
Major mineral:	Gold
Minor mineral:	Silver
Operation type:	Unknown
Deposit type:	Vein
Production size:	Small ammount of material produced
Development status:	Past Producer
ore:	Gold, Silver
gangue:	Pyrrhotite
work_type:	Underground
Reporter:	Barari, Rachel A.
disc_yr:	1892
References:	Deposit:: ROBERTS, W. L., AND RAPP, GEORGE, 1965 , MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18 Deposit:: US BUREAU OF MINES, 1955 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2 , BUREAU OF MINES INFORMATION CIRCULAR 7707 . 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 . 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