Commodities
PrimaryGold, Silver
Commodity typeM
Deposit
Deposit typePlacer
Deposit sizeS
WorkingsUnderground
Ore controlBasal Conglomerate
Materials
Ore mineralsGold, Silver
GangueLimonite, Pyrite
Geology
Host rockConglomerate · Deadwood Formation-Basal Conglomerate
AlterationPyrite Cementing Material Oxidized To Limonite
Economic & production
Development statusPast Producer
Identification
Deposit ID10055532
MRDS IDSD02102
Alternate namesPhoenix Group
RegionNA
Data scoreB
Coordinates44.37774, -103.76836
References
US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688 .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 .ALLSMAN, P. T., 1940 , RECONNAISSANCE OF GOLD MINING DISTRICTS IN THE BLACK HILLS, SOUTH DAKOTA, BUREAU OF MINES BULLETIN 427 .