James-Taylor Lease

The James-Taylor Lease is a uranium mine located in Fremont 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

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: James-Taylor Lease
Secondary: Spring Valley Deposit

Commodity

Primary: Uranium
Secondary: Vanadium

Location

State: Colorado
County: Fremont
District: Tallahassee Creek

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

Owner Name: Frank Cristopher

Production

Year: 1956
Mined: 6.000 mt
Material type: ORE U3O8 V2O5
Description: Ap_Grade: ^0.10% U308, 0.12% V205

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1956
Discovery Year: 1956
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

Model Name: Sandstone U

Orebody

Form: TABULAR, PODS, LENS

Structure

Type: R
Description: Thirtynine Mile Volcanic Field, Currant Creek Basin

Type: L
Description: Echo Park Graben, Paleovalleys

Alterations

Alteration Type: L
Alteration Text: Oxidation; Alteration Of Feldspar To Clay

Rocks

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

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

Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Eocene

Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Eocene

Analytical Data

Analytical Data: RADIOACTIVITY TO 10 TIMES BACKGROUND

Materials

Ore: Coffinite
Ore: Uraninite
Gangue: Hematite
Gangue: Limonite

Comments

Comment (Location): ONE MILE EAST OF TAYLOR SODA SPRING ; INFO FROM LAND.ST :(1976)

Comment (Deposit): LARGEST CARBONACEOUS LENS OBSERVED WAS 14 FT LONG, 2 FT THICK

Comment (Geology): DEPOSITS LOCALIZED AND PRESERVED BY SLUGGISH GROUNDWATER MOVEMENT IN AREA. THOSE CONDITIONS STILL PRESENT AS EVIDENCED BY ARTESIAN PRESSURE IN WELLS AND SPRINGS ISSUING FROM ECHO PARK FORMATION AND BY A PRESENT URANIUM CONTENT OF GROUNDWATER IN AREA AS HIGH AS 900 PPB.

References

Reference (Deposit): EPIS, R.C., WOBUS, R.A. AND SCOTT, G.R., 1979, GEOLOGIC MAP OF THE BLACK MOUNTAIN QUADRANGLE, FREMONT AND PARK CONTIES, COLORADO: USGS MAP I-1195, 1:62,500.

Reference (Deposit): DICKINSON, K.A., 1981, GEOLOGIC CONTROLS OF URANIUM MINERALIZATION IN THE TALLAASSEE CREEK URANIUM DISTRICT, FREMONT COUNTY, COLORADO: THE MOUNTAIN GEOLOGIST, V. 18, NO. 4, P. 88-94.

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

Reference (Deposit): NELSON-MOORE, J.L., COLLINS, D.B. AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULLETIN 40, P. 148-149.

Colorado Mining Photos

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