Mine detail: Homestake Mine

Previously called ''

<< Back to the map

Location

Lat / long:

44.35607, -103.76501

Resource(M)

Primary:	Gold
Secondary:	Silver
Ore:	Gold
Gangue:	Chlorite, Pyrite, Pyrrhotite
Orebody form:	ORE BODIES ARE IRREGULAR PIPELIKE STRUCTURES
Discovery year:	1875

Production

Operation type:	Unknown
Deposit type:	Stratabound
Production size:	Small
Development status:	Producer

Geology

Host type:	Iron Formation
Associated type:	Plutonic Rock
Structure:	Black Hills, The Rocks Are In A Set Of Large Isoclina Folds That Have Been Refolded By Two Sets Of Smaller Folds, Which Result In Extremely Complex Configurations. Also Warping Is Caused By Tertiary Igneous Rocks And The Dome Formed Around The Cutting Stock, Exposed West Of Lead. Ore Bodies Are Located In The Younger Set Of Crossfolds.

References

MRDS	SD01966
DEP	10106953
Reference	{Deposit:: 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}{Deposit:: ROBERTS, W. L., AND RAPP, GEORGE, 1965 , MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18}
Reporter	Barari, Rachel A.