The Old Ironsides Group Mine is a gold and silver mine located in Lawrence county, South Dakota at an elevation of 5,200 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: 5,200 Feet (1,585 Meters)
Commodity: Gold, Silver
Lat, Long: 44.38972, -103.87500
Map: View on Google Maps
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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Old Ironsides Group Mine MRDS details
Site Name
Primary: Old Ironsides Group Mine
Secondary: The Ironside
Commodity
Primary: Gold
Primary: Silver
Location
State: South Dakota
County: Lawrence
District: Ragged Top District
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: Black Hills National Forest
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Ironsides Mining Co.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Year First Production: 1899
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
Alteration Type: L
Alteration Text: Hydrothermal Alteration Of Phonolite, Accompanied By Some Mineralization.
Rocks
Name: Porphyry
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cambrian
Name: Porphyry
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Porphyry
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene
Name: Porphyry
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian
Analytical Data
Analytical Data: SAMPLE YIELDED 1.2 PPM AU AND TRACE AG
Materials
Ore: Gold
Ore: Silver
Ore: Sylvanite
Comments
Comment (Location): S 1/2 OF SEC 16 AND N 1/2 OF SEC 21
Comment (Workings): LONG TUNNEL FROM SQUAW CREEK TO INTERCEPT THE ORE AT DEPTH
References
Reference (Deposit): SHAPIRO, L. H., AND GRIES, J. P., 1970 , ORE DEPOSITS IN ROCKS OF PALEOZOIC AND TERTIARY AGE OF THE NORTHERN BLACK HILLS, SOUTH DAKOTA, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOG
Reference (Production): US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 1 , BUREAU OF MINES INFORMATION CIRCULAR 7688 . { SHAPIRO, L. H., AND GRIES, J. 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
Reference (Deposit): US BUREAU OF MINES, 1954 , BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 1 , BUREAU OF MINES INFORMATION CIRCULAR 7688 .
Reference (Deposit): SHAPIRO, L. H., AND GRIES, J. 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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