unnamed prospect

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

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.

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

Check out this collection of Colorado's best historic mining photos: Incredible Photos of Colorado Mining Scenes.