St. Jacob Mine

The St. Jacob Mine is a lead, copper, gold, and silver mine located in Hinsdale county, Colorado at an elevation of 11,919 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

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: St. Jacob Mine
Secondary: St. Jacob Group
Secondary: Patented Claims: Hamilton, MS 2425
Secondary: Griggs, MS 2426
Secondary: St. Johns, MS 2427
Secondary: St. Jacobs, MS 2428

Commodity

Primary: Lead
Primary: Copper
Primary: Gold
Primary: Silver
Secondary: Zinc

Location

State: Colorado
County: Hinsdale
District: Carson 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

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Producer
Deposit Type: Vein
Operation Type: Unknown
Year First Production: 1895
Year Last Production: 1940
Discovery Year: 1886
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

Not available

Orebody

Not available

Structure

Type: R
Description: San Juan Volcanic Field, San Juan Depression

Type: L
Description: San Juan-Uncompahgre Calderas, Lake City Caldera, Carson Volcano

Alterations

Alteration Type: L
Alteration Text: Silicification

Rocks

Name: Rhyodacite
Role: Associated
Age Type: Host Rock
Age Young: Oligocene

Name: Rhyodacite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Oligocene

Name: Rhyodacite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene

Analytical Data

Not available

Materials

Ore: Pyrite
Ore: Enargite
Ore: Marcasite
Ore: Sphalerite
Ore: Chalcopyrite
Gangue: Barite
Gangue: Quartz

Comments

Comment (Production): PARTIAL PRODUCTION RECORD. MINE WAS WORKED EXTENSIVELY FOR SEVERAL YEARS AFTER 1889, BUT NO FIGURES ARE AVAILABLE. USGS MINERAL RESOURCES OF U.S. CITES PRODUCTION (AMOUNT UNKNOWN) IN 1906. 1940 PRODUCTION CITED BY USBM MINERAL YEARBOOK IS ONE CARLOAD OF AG-AU-PB-ZN ORE FROM GEORGE III-ST. JACOBS GROUP.

Comment (Location): CLAIMS LIE ON SE EXTENSION OF BENT PEAK NORTH OF LOST TRAIL CREEK AND WEST OF UNNAMED TRIBUTARY GULCH DRAINING OFF CONTINENTAL DIVIDE TO NORTH. ELEV AND LAT-LONG GIVEN ARE FOR MINE WORKING WEST OF TRIBUTARY. ; INFO FROM LAND.ST :1977

Comment (Workings): MAIN SHAFT IS 300 FT DEEP, WITH 600 FT OF NW-SE DRIFT AT BOTTOM AND ABOUT 600 FT OF NW-SE DRIFT AT 240-FT LEVEL. SEVERAL OTHER SHAFTS AND LEVELS OF UNKNOWN EXTENT.

References

Reference (Production): USBM 1940 MINERAL YEARBOOK

Colorado Mining Photos

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