The Unnamed Prospect is a silver mine located in La Plata county, Colorado at an elevation of 8,901 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: 8,901 Feet (2,713 Meters)
Commodity: Silver
Lat, Long: 37.61667, -107.80500
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.
Unnamed Prospect MRDS details
Site Name
Primary: Unnamed Prospect
Commodity
Primary: Silver
Secondary: Copper
Location
State: Colorado
County: La Plata
District: Cascade 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: San Juan N. F.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
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: Polymetallic veins
Orebody
Not available
Structure
Type: R
Description: San Juan Uplift
Type: L
Description: Needle Mtns Uplift
Alterations
Alteration Type: L
Alteration Text: Fe Oxidation
Rocks
Name: Gabbro
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 1454.000000+-
Dating Method: Rb-Sr
Age Young: Precambrian
Name: Gabbro
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 1460.000000+-
Dating Method: U-Pb (zircon)
Material Analyzed: Zircon
Age Young: Precambrian
Name: Monzonite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: DUMP SAMPLE OF LIMONITE-STAINED QUARTZ-PYRITE CONTAINED 8.8 OZ/TON AG AND 0.03% CU
Materials
Ore: Pyrite
Gangue: Quartz
Gangue: Limonite
Comments
Comment (Location): (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). WITHIN 600 FT NE OF NORTH END OF COLUMBINE LAKE ; INFO FROM LAND.ST :1974
Comment (Deposit): PROBABLE QUARTZ VEIN CUTTING GENERALLY NE-TRENDING FOLIATION OF METASEDIMENTARY ROCKS
Comment (Workings): ONE SHAFT OF UNKNOWN DEPTH
References
Reference (Deposit): CROSS, WHITMAN, AND HOLE, A.D., 1910, DESCRIPTION OF THE ENGINEER MOUNTAIN QUADRANGLE: USGS FOLIO 171.
Reference (Deposit): BARKER, FRED, 1969, PRECAMBRIAN GEOLOGY OF THE NEEDLE MOUNTAINS, SOUSOUTHWESTERN COLORADO: USGS PROF. PAPER 644-A.
Reference (Deposit): SCOTT, D.C., 1983, MINERAL INVESTIGATION OF THE WEST NEEDLE WILDERNESS STUDY AREA AND THE BLM WEST NEEDLE CONTIGUOUS WILDERNESS STUDY AREA,LA PLATA AND SAN JUAN COUNTIES, COLORADO: USBM MLA 35-83, P. 18.
Colorado Mining Photos
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