The Alderman Deposit is a fluorine-fluorite mine located in Chaffee county, Colorado at an elevation of 7,402 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: 7,402 Feet (2,256 Meters)
Commodity: Fluorine-Fluorite
Lat, Long: 38.62528, -106.06444
Map: View on Google Maps
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Alderman Deposit MRDS details
Site Name
Primary: Alderman Deposit
Commodity
Primary: Fluorine-Fluorite
Tertiary: Manganese
Location
State: Colorado
County: Chaffee
District: Browns Canyon District
Land Status
Land ownership: Private
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.
Holdings
Not available
Workings
Type: Unknown
Ownership
Owner Name: James Bopp
Years: 1945 -
Owner Name: John Alderman And Associates
Years: 1945 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1927
Year Last Production: 1949
Discovery Year: 1923
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Model Name: Fluorspar deposits (fluorite veins)
Orebody
Not available
Structure
Type: R
Description: Southern Mosquito Range, Arkansas Valley Graben
Type: L
Description: Folds, Faults; N-Trending Fault Bounding Arkansas Valley
Alterations
Alteration Type: L
Alteration Text: Silicification, Fluoritization
Rocks
Name: Gneiss
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Gneiss
Role: Associated
Age Type: Associated Rock Unit
Age Young: Neoproterozoic
Analytical Data
Analytical Data: ESTIMATED AVERAGE 30% CAF2
Materials
Ore: Fluorite
Gangue: Quartz
Gangue: Kaolinite
Gangue: Montmorillonite
Gangue: Pyrite
Gangue: Calcite
Gangue: Psilomelane
Gangue: Manganite
Gangue: Pyrolusite
Gangue: Barite
Gangue: Opal
Gangue: Hematite
Gangue: Goethite
Comments
Comment (Location): SE OF HECLA JUNCTION, EAST OF US HWY 285, WEST OF ARKANSAS RIVER; SE/4 SEC. 34, T 51 N, R 8 E. INFO FROM LAND.ST :(1976)
Comment (Production): SMALL QUANTITY OF METALLURGICAL-GRADE FLUORSPAR MINED AND SHIPPED IN 1944-1945
Comment (Workings): CROSSCUT ADIT, DRIFT, PITS.
References
Reference (Deposit): VAN ALSTINE, R.E. AND COX, D.C., 1969, FLUORSPAR MINES AND PROSPECTS, IN, GEOLOGY AND MINERAL DEPOSITS OF THE PONCHA SPRINGS NE QUADRANGLE, CHAFFEE COUNTY, COLORADO: USGS PROFESSIONAL PAPER 626, P. 38-43
Reference (Deposit): BRADY, B.T., 1975, MAP SHOWING FLUORSPAR DEPOSITS IN COLORADO: USGS MAP MR-70, 1:500,000, TEXT
Reference (Deposit): VAN ALSTINE, R.E., 1969, GEOLOGY AND MINERAL DEPOSITS OF THE PONCHA SPRINGS NE QUADRANGLE, CHAFFEE COUNTY, COLORADO: USGS PROFESSIONAL PAPER 626, 52 P.
Colorado Mining Photos
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