The Marshall Pass No. 5 Mine is a uranium and vanadium mine located in Saguache county, Colorado at an elevation of 10,098 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: 10,098 Feet (3,078 Meters)
Commodity: Uranium, Vanadium
Lat, Long: 38.40056, -106.28333
Map: View on Google Maps
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Marshall Pass No. 5 Mine MRDS details
Site Name
Primary: Marshall Pass No. 5 Mine
Commodity
Primary: Uranium
Primary: Vanadium
Tertiary: Lead
Location
State: Colorado
County: Saguache
District: Marshall Pass District
Land Status
Land ownership: National Forest
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
Type: Surface
Ownership
Owner Name: Homestake Mining Co.
Years: 1955 -
Production
Year: 1956
Mined: 17.710 mt
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1955
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: Sawatch Range, San Juan Volcanic Field
Type: L
Structure: small faults related to Chester Fault
Description: Chester Fault
Alterations
Not available
Rocks
Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Mesoproterozoic
Name: Schist
Role: Host
Age Type: Host Rock
Age Young: Paleoproterozoic
Analytical Data
Analytical Data: RADIATION 20 MR/HR, BACKGROUND 0.07 MR/HR
Analytical Data: TWO SAMPLES ASSAYED 21.4 AND 30.0+% EQUIV. U308
Materials
Ore: Uranophane
Ore: Galena
Ore: Pitchblende
Comments
Comment (Location): ON UNNAMED TRIBUTARY OF HARRY CREEK 2.1 MILES NW OF MARSHALL PASS ; INFO FROM LAND.ST :1976
Comment (Production): PRODUCTION IN 1956 AMOUNTED TO 18 TONS ORE AT GRADE OF 1.06% U308 AND 0.06% V205, YIELDING 380 LB U308 AND 22 LB V205
Comment (Deposit): URANIUM MINERALIZATION FOUND IN PRECAMBRIAN SCHIST INTRUDED BY PEGMATITIC GRANITE ALONG LOCAL BEDDING AND FOLIATION TREND OF APPROX. N40E. IF THIS SITE IS SIMILAR TO LOOKOUT NO. 22 PROSPECT TO SOUTH, URANIUM COULD BE LOCALIZED BY SMALL CHESTER FAULT OFFSHOOTS. HIGHER GRADE ORE WAS PRODUCED FROM REGOLITH OR COLLUVIUM OVERLYING BEDROCK.
Comment (Deposit): REMAINDER OF MARSHALL PASS BLOCK OF CLAIMS (1 THRU 58) LIE IN SE SEC. 11, ALL SEC. 14, E2 SEC. 15, E2 SEC. 22, W2 AND NE SEC. 23, NE SEC. 27, T48N, R6E ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Comment (Workings): ONE PIT 6 FT DEEP
References
Reference (Deposit): WRIGHT, R.J., AND EVERHART, D.L., 1960, URANIUM--MARSHALL PASS DISTRICT, IN DEL RIO, S.M., MINERAL RESOURCES OF COLORADO--FIRST SEQUEL: COLORADO STATE MINERAL RESOURCES BOARD, P. 357-359.
Reference (Deposit): OLSON, J.C., 1977, PRELIMINARY GEOLOGIC MAP OF PART OF THE PAHLONE PEAK QUADRANGLE, GUNNISON, SAGUACHE, AND CHAFFEE COUNTIES, COLORADO: USGS OPEN-FILE REPT. 77-325.
Reference (Deposit): GROSS, E.B., 1965, A UNIQUE OCCURRENCE OF URANIUM MINERALS, MARSHALL PASS, SAGUACHE COUNTY, COLORADO: AM. MINERALOGIST, V. 50, NOS. 7-8, P. 909-923.
Reference (Deposit): RANSPOT, H.W., 1958, GEOLOGY AND URANIUM DEPOSITS OF THE INDIAN CREEK AREA, GUNNISON AND SAGUACHE COUNTIES, COLORADO: UNIV. COLORADO M.S. THESIS
Reference (Deposit): NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 392
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