Cojade Mine

The Cojade Mine is a beryllium mine located in Larimer county, Colorado at an elevation of 6,841 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: Cojade Mine

Commodity

Primary: Beryllium
Tertiary: Lithium
Tertiary: Niobium (Columbium)
Tertiary: Tantalum

Location

State: Colorado
County: Larimer
District: Rattlesnake Park Area

Land Status

Land ownership: State
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
Operation Type: Unknown
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: Front Range Uplift

Type: L
Description: Ne-Trending Fault

Alterations

Not available

Rocks

Name: Tonalite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Name: Tonalite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

Analytical Data

Not available

Materials

Ore: Amblygonite
Ore: Beryl

Comments

Comment (Deposit): CONCORDANT PEGMATITE IN GRANITIC GNEISS

Comment (Workings): 2 SMALL OPEN CUTS AND 2 BULLDOZED AREAS

Comment (Location): ON WEST SIDE OF RATTLESNAKE PARK 0.5 MILE SW OF PINEWOOD LAKE. ELEV AND LAT-LONG GIVEN ARE FOR CENTER SE. ; INFO FROM LAND.ST :(1977)

References

Reference (Deposit): THURSTON, W.R., 1955, PEGMATITES OF THE CRYSTAL MOUNTAIN DISTRICT, LARIMER COUNTY, COLORADO: USGS BULL. 1011, 185 P., 13 PLS.

Reference (Deposit): MEEVES, H.C., AND OTHERS, 1966, RECONNAISSANCE OF BERYLLIUM-BEARING PEGMATITE DEPOSITS IN SIX WESTERN STATES: USBM IC-8298, P. 30.

Reference (Deposit): COLTON, R.B., 1978, GEOLOGIC MAP OF THE BOULDER-FORT COLLINS-GREELEY AREA, COLORADO: USGS MAP I-855-G.

Reference (Production): DMEA RECORDS AND CONSERV. DIV. COMP. DATA (FROM ORIGINAL CRIB RECORD)

Colorado Mining Photos

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