Crucible Mine

The Crucible Mine is a uranium and vanadium mine located in San Miguel county, Colorado at an elevation of 8,199 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

Name: Crucible Mine  

State:  Colorado

County:  San Miguel

Elevation: 8,199 Feet (2,499 Meters)

Commodity: Uranium, Vanadium

Lat, Long: 37.99722, -107.98861

Map: View on Google Maps

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.


Satelite image of the Crucible Mine

Crucible Mine MRDS details

Site Name

Primary: Crucible Mine
Secondary: Patented Claim: Crucible No. 1
Secondary: Ms 19702


Commodity

Primary: Uranium
Primary: Vanadium


Location

State: Colorado
County: San Miguel
District: Lower San Miguel 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

Year: 1971
Time Period: -1971
Description: Cp_Grade: ^1.58% V205, 0.07% U308


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1915
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: Paradox Basin, Uncompahgre Uplift, San Juan Volcanic Field, San Miguel Mtns

Type: L
Description: Gray Head Fault, Unnamed Fault, Gray Head Laccolith


Alterations

Not available


Rocks

Name: Gabbro
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Gabbro
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic

Name: Gabbro
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene

Name: Gabbro
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Jurassic


Analytical Data

Not available


Materials

Not available


Comments

Comment (Deposit): BEDS CUT BY NW-TRENDING GRAY HEAD FAULT WEST OF MINE AND BY MORE NW-TRENDING BRANCH FAULT SW OF MINE. VANADIUM DEPOSIT IN ENTRADA SANDSTONE LIES NEAR NE MARGIN OF SMALL MINERALIZED BELT WITHIN NE-CONCAVE CURVE OF LARGER PRINCIPAL MINERALIZED BELT.

Comment (Location): EXACT LOCATION UNCERTAIN BUT MINE APPEARS TO BE LOCATED IN UNNAMED TRIBUTARY OF SAN MIGUEL RIVER 0.6 MILE NE OF SAWPIT, EAST OF BELLE CHAMPION MINE, AND SE OF LIZZIE G. MINE. ELEV AND LAT-LONG GIVEN ARE FOR ADIT ON SOUTH SIDE OF GULCH. ; INFO FROM LAND.ST :1975

Comment (Production): PARTIAL PRODUCTION RECORD. ANNUAL FIGURES FOR YEARS BEFORE 1920 AND FOR 1940S AND 1950S UNKNOWN.

Comment (Workings): APPARENTLY ONE ADIT DRIVEN GENERALLY SE INTO HILLSIDE, EXTENT UNKNOWN


References

Reference (Deposit): NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 413.

Reference (Deposit): BLM MINERAL SURVEY MS 19702

Reference (Production): NELSON-MOORE AND OTHERS, 1978, P. 413

Reference (Deposit): FISCHER, R.P., AND OTHERS, 1947, VANADIUM DEPOSITS NEAR PLACERVILLE, SAN MIGUEL COUNTY, COLORADO: COLORADO SCI. SOC. PROC., V. 15, NO. 3, P. 117-146.

Reference (Deposit): BUSH, A.L., AND OTHERS, 1961, PRELIMINARY GEOLOGIC MAP OF THE GRAY HEAD QUADRANGLE, SAN MIGUEL COUNTY, COLORADO: USGS MAP MF-176.


Colorado Mining Photos

Placer mines at Cripple Creek, Colorado ca. 1892

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