The unnamed prospect is a copper and gold mine located in Costilla county, Colorado.
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
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unnamed prospect MRDS details
Site Name
Primary: unnamed prospect
Commodity
Primary: Copper
Primary: Gold
Secondary: Silver
Tertiary: Zinc
Location
State: Colorado
County: Costilla
District: El Plomo district
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: flat vein
Operation Type: Underground
Years of Production:
Organization:
Significant: N
Physiography
Not available
Mineral Deposit Model
Model Name: Epithermal veins
Model Name: Gold on flat faults
Orebody
Not available
Structure
Type: L
Description: low-angle fault
Alterations
Alteration Type: L
Alteration Text: silicification
Rocks
Name: Granitic Gneiss
Role: Associated
Age Type: Associated Rock
Age Young: Paleoproterozoic
Analytical Data
Not available
Materials
Not available
Comments
Comment (Commodity): One sample from the small mine dump yielded 4.2 percent copper, 460 ppb gold, 74 ppm silver, and 170 ppm zinc (Kirkham and others, 2003).
Comment (Geology): The Sangre de Cristo fault is located about a mile to the west of this prospect.
Comment (Location): Small adit and mine dump is located south of the large San Luis Mine and south of Rito Seco, a perennial stream. Lower western foothills of the Sangre de Cristo Mountains.
Comment (Production): Small adit. Production details not known.
Comment (Reserve-Resource): One sample (Kirkham and others, 2003) yielded 4.2 percent copper, 460 ppb gold, 74 ppm silver, and 170 ppm zinc.
References
Reference (Geology): Kirkham, R.M., Shaver, K.C., Lindsay, N.R., and Wallace, A.R., 2003, Geologic map of the Taylor Ranch quadrangle, Costilla County, Colorado: Colorado Geological Survey Open-File Report 03-15, scale 1:24,000, 30 p.
Reference (Geology): Benson, R.G., 1997, Detachment fault-related mineralization in a rift setting at the San Luis gold deposit and Sangre de Cristo Mountains, Alamosa, Costilla, and Saguache Counties, Colorado: Golden, Colorado School of Mines, Ph.D. dissertation, 226 p.
Reference (Deposit): Kirkham, R.M., Shaver, K.C., Lindsay, N.R., and Wallace, A.R., 2003, Geologic map of the Taylor Ranch quadrangle, Costilla County, Colorado: Colorado Geological Survey Open-File Report 03-15, scale 1:24,000, 30 p..
Reference (Deposit): Benson, R.G., 1997, Detachment fault-related mineralization in a rift setting at the San Luis gold deposit and Sangre de Cristo Mountains, Alamosa, Costilla, and Saguache Counties, Colorado: Golden, Colorado School of Mines, Ph.D. dissertation, 226 p.
Colorado Mining Photos
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