The Gray Jeep Group is a thorium mine located in Gunnison county, Colorado at an elevation of 8,232 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
Elevation: 8,232 Feet (2,509 Meters)
Commodity: Thorium
Lat, Long: 38.40361, -107.13500
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.
Gray Jeep Group MRDS details
Site Name
Primary: Gray Jeep Group
Secondary: Unpatented Claims: Gray Jeep Nos. 1-15
Secondary: Stacie Queen
Commodity
Primary: Thorium
Tertiary: Manganese
Location
State: Colorado
County: Gunnison
District: Wolf Creek Area
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
Owner Name: Donald A. Hall
Home Office: Gunnison, Co.
Years: 1960 -
Owner Name: Lakewood Mining Co.
Home Office: Gunnison, Co.
Years: 1960 -
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, Unnamed Fault, Tolvar Peak Stock
Alterations
Not available
Rocks
Name: Syenite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Syenite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Syenite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: BACKGROUND RADIATION 0.01 TO 0.02 MR/HR, RANGE IN VEIN FROM 0.08 TO 2.0 MR/HR. THREE GRAB SAMPLES MEASURED 0.06 TO 0.09 MR/HR. FOUR CHANNEL SAMPLES MEASURED 0.06 TO 1.0 MR/HR.
Materials
Ore: Thorite
Gangue: Calcite
Gangue: Goethite
Gangue: Pyrolusite
Gangue: Fluorite
Gangue: Hematite
Gangue: Barite
Gangue: Quartz
Gangue: Ankerite
Gangue: Siderite
Gangue: Dolomite
Gangue: Apatite
Comments
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 PRECABRIAN SYENITES NORTH AND WEST OF IRON HILL AND OF YOUNGER LATE PRECAMBRIAN OR CAMBRIAN CARBONATITES AT IRON HILL. PRINCIPAL FAULT TRENDING GENERALLY N 35 E DISPLACES BLACK CANYON SCHIST AND GNEISS COUNTRY ROCK ON SE AGAINST PORPHYRITIC SYENITE OF COMPOSITE INTRUSION ON NW, APPARENT RIGHT LATERAL MOVEMENT. GRANITE DIKE INTRUDES SYENITE ON TREND SUBPARALLEL TO FAULT.
Comment (Workings): BULLDOZER TRENCHES; 11-FT-DEEP SHAFT
Comment (Geology): OTHER MINERALS LISTED ABOVE ARE GENERAL OCCURRENCES REPORTED FOR TH VEINS IN AREA; ALL MAY NOT NECESSARILY OCCUR AT THIS SITE (EXCEPT PYROLUSITE)
Comment (Location): PROSPECTS LIE ALONG WEST SIDE OF ROAD ALONG UNNAMED TRIBUTARY OF WOLF CREEK 0.95 MILE NORTH OF LILLY BELLE MINE. ; INFO FROM LAND.ST :1975
References
Reference (Deposit): HEDLUND, D.C., AND OLSON, J.C., 1973, GEOLOGIC MAP OF THE CARPENTER RIDE QUADRANGLE, GUNNISON COUNTY, COLORADO: USGS MAP GQ-1070.
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): NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCE OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 174.
Reference (Deposit): MALAN, R.C., 1955, AEC PRELIM. RECON. REPT. DEB-P-3-1713.
Reference (Deposit): COLORADO DIV. MINES INF. REPT.
Colorado Mining Photos
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