Thornburg Mine

The Thornburg Mine is a mine located in Saguache county, Colorado at an elevation of 9,006 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: Thornburg Mine
Secondary: Los Ochos Uranium Mine

Commodity

Tertiary: Uranium

Location

State: Colorado
County: Saguache
District: Cochetopa District

Land Status

Not available

Holdings

Type: Located Claim

Workings

Not available

Ownership

Owner Name: Homestake Mining Co.
Percent: 100.0
Home Office: California
Info Year: 1975

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Year First Production: 1958
Discovery Year: 1954
Years of Production:
Organization:
Significant: N

Physiography

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

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Unknown: Torbernite
Unknown: Uraninite
Unknown: Autunite

Comments

Comment (Ownership): OWNER=HOMESTAKE MINING COMPANY: ADDRESS=650 CALIFORNIA ST. 9 SAN FRANCISCO,CALIFORNIA 94108 THE LOS OCHOS URANIUM DEPOSIT OCCURS IN A NORTHEASTERLY ING ZONE OF SHEARING AND FRACTURING AT THE CONTACT OF GRANIT SCHIST OF PRECAMBRIAN AGE WITH THE MORRISON FORMATION OF JUR AGE NEAR THE INTERSECTION WITH A LARGE EAST-TRENDING FAULT. INTERSECTIONS OF NORTHEAST-TRENDING SHEAR ZONES WITH EAST-TR FAULTS ARE THE MOST OBVIOUS ORE CONTROL. PITCHBLENDE WAS DEP UNDER EPITHERMAL CONDITIONS DURING TERTIARY TIME. THE SEQUEN EVENTS IN THE FORMATION OF THE DEPOSIT ARE:(1)THE MORRISON A DAKOTA FORM. WERE DEPOSITED ON PEGRANITE AND SCHIST DURING J TIME.(2)IN TERTIARY TIME INTENSE FAULTING OCCURRED. FAULTING CIATED THE MORRISON FM AND GRANITE ADJACENT TO IT PROVIDING SPACES FOR POST-FAULTING ORE BEARING SOLUTIONS. (3)POST-MINE TION MOVEMENT OCCURRED ON THE FAULTS OF THE LOS OCHOS MINE.

References

Reference (Deposit): INFORMATION SOURCES: GUIDEBOOK TO URANIUM DEPOSITS OF THE WE

Reference (Deposit): UNITED STATES;1959, U.S.A.E.C.

Reference (Deposit): MALAN,R. AND RANSPOT,H.,1959,GEOLOGY OF

Reference (Deposit): URANIUM DEPOSITS OF THE COCHETOPA MINING DISTRICT: ECONOMIC

Colorado Mining Photos

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