The Tallahassee Creek District is a uranium mine located in Fremont county, Colorado at an elevation of 7,999 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: 7,999 Feet (2,438 Meters)
Commodity: Uranium
Lat, Long: 38.54694, -105.54389
Map: View on Google Maps
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Tallahassee Creek District MRDS details
Site Name
Primary: Tallahassee Creek District
Secondary: Hansen Deposit
Secondary: Picnic Tree Mine
Secondary: Colorado Lease 519
Secondary: Dickson-Snooper Mine
Secondary: Mary L Mine
Secondary: Joan
Commodity
Primary: Uranium
Secondary: Vanadium
Location
State: Colorado
County: Fremont
District: Tallahassee Creek District
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
Not available
Production
Year: 1971
Time Period: 1954-1971
Mined: 77111.000 mt
Material type: U ORE
Description: Cp_Grade: ^0.25% U308 Average
Deposit
Record Type: District
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1952
Year Last Production: 1969
Discovery Year: 1951
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
Form: TABULAR, PODS
Structure
Type: R
Description: Thirty Nine 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
Analytical Data
Not available
Materials
Ore: Uraninite
Ore: Coffinite
Gangue: Limonite
Gangue: Hematite
Comments
Comment (Deposit): BELT OF LAYERED CALC-SILICATE GNEISS TRENDS N 70 TO 90 E. DEPOSIT LIES ON BRANCH OF HURRICANE HILL FAULT SYSTEM KNOWN AS ASCENSION FAULT, WHICH TRENDS N 62 W, 66 TO 85 NE AND IS ACTUALLY COMPOSED OF SEVERAL SUBPARALLEL ANASTAMOSING FAULT SURFACES. ASCENSION FAULT FORMS V-SHAPED BLOCK WITH SECOND FAULT TO NE TRENDING LESS NW, BOTH SHOWING RIGHT-LATERAL DISPLACEMENT. PITCHBLENDE OCCURS AS COLLOFORM COATINGS ON QUARTZ- AND CARBONATE-CEMENTED BRECCIA FRAGMENTS IN HANGING WALL OF ASCENSION FAULT AND AS THIN STRINGERS ON SUBSIDIARY FAULTS AND FRACTURES.
Comment (Deposit): DUPLICATE D002241 DELETED ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Comment (Location): The lat-long location is roughly the center of the Tallahassee Creek district. The district is along Tallahassee Creek, northwest of Parkdale.
Comment (Production): NO PRODUCTION IN INTERVENING YEARS OR AFTER 1972. SHERIDAN AND OTHERS REPORT LOWER PRODUCTION THAN CITED ABOVE FOR 1960. CUMULATIVE ORE TOTAL INCLUDES ESTIMATED 853 ST FOR 1961 BASED ON AVERAGE ORE GRADE OF 0.23% U3O8.
Comment (Reserve-Resource): 10,077,480 kg U3O8 contained in mineralized material blocked out in the Hansen orebody and the Picnic Tree orebody by Cyprus Mines Corp. between 1977 and 1980 (Babcock, 1980).
Comment (Workings): SURFACE EXPLORATORY CUTS; 16-FT-LONG UPPER ADIT; 425 FT OF WORKINGS ON MAIN LEVEL FROM ADIT DRIVEN GENERALLY WESTWARD
References
Reference (Deposit): WOBUS, R.A., EPIS, R.C. AND SCOTT, G.R., 1979, GEOLOGIC MAP OF THE COVER MOUNTAIN QUADRANGLE, FREMONT, PARK, AND TELLER COUNTIES, COLORADO: USGS MAP I-1179, 1:62,500.
Reference (Deposit): EPIS, R.C., WOBUS, R.A. AND SCOTT, G.R., 1979, GEOLOGIC MAP OF THE BLACK MOUNTAIN QUADRANGLE, FREMONT AND PARK COUNTIES, COLORADO: USGS MAP I-1195, 1:62,500.
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. 143-153.
Reference (Deposit): MACPHERSON, B.A., 1959, GEOLOGY AND URANIUM DEPOSITS OF THE TALLAHASSEE CREEK DISTRICT, FREMONT COUNTY, COLORADO: USAEC RME-1083, OPEN-FILE REPORT, 41 P.
Reference (Production): NELSON-MOORE AND OTHERS, 1978; BABCOCK, 1980
Reference (Reserve-Resource): BABCOCK, J.W., 1980
Reference (Deposit): BABCOCK, J.W., 1980, TALLAHASSEE CREEK URANIUM DEPOSITS, IN SILVER CLIFF VOLCANIC CENTER AND TALLAHASSEE CREEK URANIUM DEPOSITS: DENVER REGIONAL EXPLORATION GEOLOGISTS' SOCIETY GUIDEBOOK, P. 15-31.
Reference (Deposit): DICKINSON, K.A., 1981, GEOLOGIC CONTROLS OF URANIUM MINERALIZATION IN THE TALLAHASSEE CREEK URANIUM DISTRICT, FREMONT COUNTY, COLORADO: THE MOUNTAIN GEOLOGIST, V. 18, NO. 4, P. 88-94.
Reference (Deposit): DICKINSON, K.A. AND HILLS, F.A., 1982, OLIGOCENE VOLCANIC ROCKS: POSSIBLE SOURCE OF URANIUM IN EPIGENETIC DEPOSITS IN PARTS OF CHAFFEE, PARK, AND FREMONT COUNTIES, COLORADO: USGS OPEN-FILE REPORT 82-403, 32 P.
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