South Dakota · Lawrence County
Past Producer
Spanish R Mine
Lawrence County, South Dakota, United States
Gold
Silver
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USGS source ↗
Commodities
Primary
Gold
Secondary
Silver
Commodity type
M
Deposit
Deposit type
Replacement
Deposit size
S
Workings
Underground
Orebody form
IRREGULAR
Ore control
Vertical Fractures At Contact Of Limestone And Intrusions
Materials
Ore minerals
Gold, Silver
Geology
Host rock
Limestone · Pahasapa Limestone
Associated rock
Plutonic Rock · Porphyry Intrusions
Alteration
Thoroughly Oxidized Red Gouge
Economic & production
Development status
Past Producer
Identification
Deposit ID
10104208
MRDS ID
SD02091
Alternate names
Richmond Claim
Region
NA
Data score
B
Coordinates
44.39718, -103.86864
References
US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688