The Hardesty Homestead is a feldspar, beryllium, mica, and tantalum mine located in Pennington county, South Dakota at an elevation of 4,800 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: 4,800 Feet (1,463 Meters)
Commodity: Feldspar, Beryllium, Mica, Tantalum
Lat, Long: 43.91917, -103.46222
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.
Hardesty Homestead MRDS details
Site Name
Primary: Hardesty Homestead
Commodity
Primary: Feldspar
Primary: Beryllium
Primary: Mica
Primary: Tantalum
Secondary: Tin
Tertiary: Lithium
Location
State: South Dakota
County: Pennington
District: Unorganized 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
Type: Surface
Ownership
Owner Name: George Hardesty
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
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: IRREGULAR
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Spodumene Altered To Sericite. Amblygonite Is Altered.
Rocks
Name: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Beryl
Ore: Amblygonite
Ore: Cassiterite
Ore: Tantalite
Ore: Muscovite
Ore: Albite
Ore: Spodumene
Gangue: Topaz
Gangue: Quartz
Gangue: Graphite
Gangue: Rhodochrosite
Comments
Comment (Deposit): 4 ZONES: THE OUTER ZONE OF ALBITE-QUARTZ-MUSCOVITE CARRIES BERYL CRYSTALS. THE SECOND ZONE IS QUARTZ & ALBITE WITH SMALL AMOUNTS OF MUSCOVITE. THE THIRD ZONE CONTAINS SPODUMENE, AMBLYGONITE & TANTALITE & SOME BERYL. THE CORE IS QUARTZ.
Comment (Location): SE 1/4, NE 1/4
Comment (Development): ECON.COM: BERYL CRYSTALS UP TO 8 INCHES, SOME BOOK MICA, SPODUMENE CRYSTALS UP TO 6 FEET LONG.
Comment (Workings): A SMALL OPENCUT.
References
Reference (Deposit): U. S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
Reference (Deposit): ROBERTS, W.L., AND RAPP, GEORGE, 1965, MINERALOGY OF THE BLACK HILLS, SOUTH DAKOTA SCHOOL OF MINES AND TECHNOLOGY BULLETIN 18
Reference (Production): U.S. BUREAU OF MINES, 1955, BLACK HILLS MINERAL ATLAS, SOUTH DAKOTA: PART 2, BUREAU OF MINES INFORMATION CIRCULAR 7707
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