Mine detail: Deadbroke Mine

Previously called 'Phoenix Group'

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Location

Lat / long: 44.37774, -103.76836

Resource(M)

Primary: Gold, Silver
Ore: Gold, Silver
Gangue: Limonite, Pyrite

Production

Operation type: Unknown
Deposit type: Placer
Production size: Small
Development status: Past Producer

Geology

Host rock:Deadwood Formation-Basal Conglomerate
Host type:Conglomerate
Alteration processes:Pyrite Cementing Material Oxidized To Limonite

References

MRDSSD02102
DEP10055532
Reference{Deposit:: US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688 .}{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 .}{Deposit:: ALLSMAN, P. T., 1940 , RECONNAISSANCE OF GOLD MINING DISTRICTS IN THE BLACK HILLS, SOUTH DAKOTA, BUREAU OF MINES BULLETIN 427 .}
ReporterBarari, Rachel A.