Courthouse vein system

The Courthouse vein system is a gold and silver mine located in Huerfano 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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Site Name

Primary: Courthouse vein system
Secondary: Dividend/Eagle Plume adit
Secondary: Hawkins adit
Secondary: Goodman claims
Secondary: Coronado Group
Secondary: McMillan Group

Commodity

Primary: Gold
Primary: Silver
Secondary: Tungsten
Tertiary: Tellurium

Location

State: Colorado
County: Huerfano
District: Blanca 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
Operation Type: Underground
Years of Production:
Organization:
Significant: N

Physiography

Not available

Mineral Deposit Model

Model Name: Epithermal veins

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Gabbro
Role: Associated
Description: dikes
Age Type: Associated Rock
Age Young: Tertiary

Name: Tonalite
Role: Host
Age Type: Host Rock Unit
Age Young: Mesoproterozoic

Name: Gabbro
Role: Host
Age Type: Host Rock Unit
Age Young: Mesoproterozoic

Name: Rhyolite
Role: Associated
Description: dikes
Age Type: Associated Rock
Age Young: Tertiary

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Wolframite
Ore: Tetrahedrite
Ore: Sylvanite
Ore: Sphalerite
Ore: Scheelite
Ore: Pyrite
Ore: Polybasite
Ore: Pearceite
Ore: Galena
Ore: Gold
Ore: Hessite
Ore: Jalpaite
Ore: Melonite
Gangue: Quartz
Gangue: Pyrrhotite
Gangue: Muscovite
Gangue: Magnetite
Gangue: Orthoclase
Gangue: Epidote
Gangue: Chlorite
Gangue: Calcite
Gangue: Barite
Gangue: Ankerite
Gangue: Sericite

Comments

Comment (Reserve-Resource): The U.S. Bureau of Mines estimated resources of 4 million tons grading 0.4 oz/ton gold, 8 oz/ton silver, and 0.01% WO3. (Scott, 1986)

Comment (Geology): The quartz-sulfide vein trends NNW, dips NE and can be traced for more than 3 miles.

Comment (Location): The claims total about 140 acres and lie within 1 mile NNE of Blanca Peak, in secs. 19 and 30, T 28 S, R 72 W.

References

Reference (Deposit): Ellis, C.E., Hannigan, B.J., and Thompson, J.R., 1983, Mineral investigation of the Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado: U.S. Bureau of Mines Open File Report MLA 65-83, 190 p.

Reference (Names): Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.

Reference (Deposit): Scott, D. C., 1986, Gold, silver, and tungsten resources of the Courthouse vein system, Sangre de Cristo Wilderness Study Area, Alamosa and Huerfano counties, Colorado: U.S. Bureau of Mines Open File Report MLA 52-86, 28 p.

Reference (Deposit): Ellis, C. E., 1988, Mineralogy and configuration of the Courthouse vein system, Alamosa, Costilla, and Huerfano counties, Colorado: U.S. Bureau of Mines Open File Report MLA 32-88, 36 p.

Reference (Reserve-Resource): Scott, 1986.

Colorado Mining Photos

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