Cross Mine

The Cross Mine is a lead, zinc, silver, and gold mine located in Boulder 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

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Site Name

Primary: Cross Mine
Secondary: Potosi & Cross Mines

Commodity

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

Location

State: Colorado
County: Boulder
District: Grand Island-Caribou 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: Unknown
Years of Production:
Organization:
Significant: N

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

Mineral Deposit Model

Model Name: Polymetallic veins

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Ore: Silver

Comments

Comment (Location): Location of Cross adit, about 2000 feet SE of Caribou, NW/4 sec. 9, T1S, R73 W.

Comment (Production): POTOSI-1877-$18,000

Comment (Reserve-Resource): Calais Resources has continued exploration in the Caribou and Cross mines area and reports (2005) a total resource (measured, indicated, and inferred) of: 437,240 oz Au and 12,575,240 oz Ag, contained in 1,058,000 tons of mineralized material for the Caribou/Cross project. The company continued exploration in the district in 2004 and 2005.

Comment (Production): Exploration and development work at the Cross Mine, from 1977 to 1982, resulted in production valued at $2.1 million, including about 3440 oz Au, 83,000 oz Ag, 200,000 lb Zn, 166,000 lb Pb, and 20,000 lb Cu, from 22,500 tons of crude ore.

References

Reference (Deposit): Sunshine Mining Co. Colorado exploration files, unpublished data, Colorado Geological Survey.

Reference (Reserve-Resource): Calais Resources corporate info., accessed from internet on 12/20/2005.

Reference (Deposit): MOORE AND OTHERS, 1957, USGS BULL. 1030-N, P. 547 AND PL. 35.

Reference (Deposit): CONSV. DIV. COMP. DATE, 10,62

Colorado Mining Photos

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