The Hidden Treasure Group Mine is a gold and silver mine located in Lawrence county, South Dakota at an elevation of 5,400 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 5,400 Feet (1,646 Meters)
Commodity: Gold, Silver
Lat, Long: 44.35861, -103.81056
Map: View on Google Maps
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Hidden Treasure Group Mine MRDS details
Site Name
Primary: Hidden Treasure Group Mine
Commodity
Primary: Gold
Primary: Silver
Secondary: Fluorine-Fluorite
Location
State: South Dakota
County: Lawrence
District: Lead District
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Hoosier Mining And Milling Co.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1876
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Black Hills
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Plutonic Rock
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Plutonic Rock
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene
Name: Plutonic Rock
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian
Analytical Data
Not available
Materials
Ore: Silver
Ore: Gold
Ore: Fluorite
Comments
Comment (Geology): INTRUSIVE MINERALIZATION = TERT, PLACER MINERALIZATION = PREC
Comment (Location): T5N R3E SEC 30 AND 31 AND ADJACENT PARTS OF T5N R2E SEC 25 AND 36
Comment (Development): 194 AC OF PATENTED CLAIMS, DEVELOPMENT EXTENDED DOWN INTO UNDERLYING PRECAMBRIAN SCHISTS AND WAS ASSOCIATED WITH TERTIARY INTRUSIONS.
Comment (Deposit): THICKNESS = 2-12 FT (PLACER)
Comment (Workings): ONE SHAFT AND NUMEROUS SHORT DRIFTS
References
Reference (Deposit): US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART I, BUREAU OF MINES INFORMATION CIRCULAR 7688 .
Reference (Deposit): SHAPIRO, LEWIS, H., AND GRIES, JOHN P., 1970 , ORE DEPOSITS IN ROCKS OF PALEOZOIC AND TERTIARY AGE OF THE NORTHERN BLACK HILLS, SOUTH DAKOTA, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY.
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