The Case Group is a manganese mine located in Custer county, South Dakota at an elevation of 4,600 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: 4,600 Feet (1,402 Meters)
Commodity: Manganese
Lat, Long: 43.52139, -103.71722
Map: View on Google Maps
Satelite View
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.
Case Group MRDS details
Site Name
Primary: Case Group
Commodity
Primary: Manganese
Location
State: South Dakota
County: Custer
District: Unorganized District
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Taylor, G. H. And Dick, Arnke, John W.
Home Office: Custer, Sd
Owner Name: Carrol, Don
Home Office: Omaha, Ne
Owner Name: Collingwood, Lewis
Home Office: Pringle, Sd
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Replacement
Operation Type: Unknown
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
Form: FLAT LYING BED
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrolusite
Comments
Comment (Location): ON THE MAP PLEASANT VALLEY IS IN T.5S; THEREFORE, THE TOWNSHIP GIVEN MAY BE INCORRECT.
Comment (Development): LOW GRADE ORE
Comment (Deposit): THICKNESS AVERAGES 30 INCHES. OVERBURDEN IS 5 - 35 FT GRAVEL. EXACT EXTENT IS UNKNOWN BUT COULD BE AS MUCH AS 1.5 MILES LONG BY 0.5 MILE WIDE. SIX UNPATENTED CLAIMS. HIGH SILICA CONTENT.
Comment (Workings): A FEW SMALL DISCOVERY CUTS
References
Reference (Deposit): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
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