Lady In Red Shaft

The Lady In Red Shaft is a thorium mine located in Gunnison county, Colorado at an elevation of 9,199 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

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Site Name

Primary: Lady In Red Shaft

Commodity

Primary: Thorium
Tertiary: REE

Location

State: Colorado
County: Gunnison
District: Goose Creek District

Land Status

Land ownership: BLM Administrative Area
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: Occurrence
Deposit Type: Vein
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: Gunnison Uplift, San Juan Volcanic Field

Type: L
Description: Gunnison Gold Belt, Iron Hill Alkalic Complex, Cimarron Fault, Tolvar Peak Stock

Alterations

Not available

Rocks

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

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

Analytical Data

Analytical Data: 0.4 MR/HR MEASURED AT CUT WEST OF SHAFT
Analytical Data: BAKER AND ANCTIL (1954) CITE BACKGROUND RADIATION OF 0.03 MR/HR

Materials

Ore: Thorite
Gangue: Hematite
Gangue: Quartz
Gangue: Barite
Gangue: Limonite

Comments

Comment (Location): ON HILLTOP NE OF CEBOLLA CREEK. ; INFO FROM LAND.ST :1976

Comment (Deposit): THORIUM VEINS IN THIS AREA ARE ONE OF FOUR ENVIRONMENTS OF TH OCCURRENCE KNOWN IN POWDERHORN-IRON HILL AREA AND ARE PROBABLY RELATED TO EMPLACEMENT OF LATE PRECAMBRIAN SYENITES NORTH AND WEST OF IRON HILL AND OF YOUNGER LATE PRECAMBRIAN OR CAMBRIAN CARBONATITES AT IRON HILL. GRANITE SHOWS SOME FOLIATION IN GENERAL NE DIRECTION PARALLEL TO SURROUNDING DUBOIS GREENSTONE. SMALL SYENITE INTRUSION LOCATED ON HILLTOP 0.8 MILE NNW OF PROSPECTS.

Comment (Workings): ONE SHAFT OF UNKNOWN DEPTH; SURFACE PROSPECT CUTS

References

Reference (Deposit): BAKER, K.E., AND ANCTIL, R.J., 1954, AEC PRELIM. RECON. REPT. DEB-PRR-C-1529.

Reference (Deposit): NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 174-175.

Reference (Deposit): HEDLUND, D.C., AND OLSON, J.C., 1961, FOUR ENVIRONMENTS OF THORIUM-, NIOBIUM-, AND RARE-EARTH-BEARING MINERALS IN THE POWDERHORN DISTRICT OF SOUTHWESTERN COLORADO: USGS PROF. PAPER 424-B, P. B283-B286.

Reference (Deposit): OLSON, J.C., AND HEDLUND, D.C., 1973, GEOLOGIC MAP OF THE GATEVIEW QUADRANGLE, GUNNISON COUNTY, COLORADO: USGS MAP GQ-1071.

Colorado Mining Photos

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