South Dakota · Lawrence County
Past Producer
Olaf Seim Mine
Lawrence County, South Dakota, United States
Sulfur-Pyrite
Gold
Copper
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USGS source ↗
Commodities
Primary
Sulfur-Pyrite
Secondary
Gold
Tertiary
Copper
Commodity type
M
Deposit
Deposit type
Replacement
Deposit size
S
Workings
Underground
Ore control
Black Graphitic Slate Member.
Materials
Ore minerals
Chalcopyrite, Gold, Pyrite
Gangue
Melanterite
Economic & production
Development status
Past Producer
First production
1890
Identification
Deposit ID
10055572
MRDS ID
SD02157
Alternate names
Gotland
Region
NA
Data score
C
Coordinates
44.36857, -103.74363
References
US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I BUREAU OF MINES INFORMATION CIRCULAR 7688