Mine detail: Picnic Tree Mine

Previously called 'Picnic Tree ClaimsHall HomesteadPicnic Tree-Hall'

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Location

Lat / long:

38.53668, -105.52614

Resource(M)

Primary:	Uranium
Secondary:	Vanadium
Ore:	Coffinite, Uraninite
Gangue:	Hematite, Limonite
Orebody form:	TABULAR, PODS

Production

Operation type:	Surface-Underground
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Tallahassee Creek Conglomerate, Tallahassee Creek Ash Fall Member
Host type:	Claystone,Bentonite,Tuff,Volcanic Breccia (Agglomerate)
Associated rock:	Wall Mountain Tuff Was Probable Principal Uranium Source
Associated type:	Rhyolite
Structure:	Thirtynine Mile Volcanic Field, Currant Creek Basin, Echo Park Graben, Paleovalleys, Fault Blocks
Tectonic:	Central Cordillera (Southern Rocky Mountains)
Alteration processes:	Oxidation; Alteration Of Feldspar To Clay

References

MRDS	D009330
DEP	10013182
Reference	{Deposit:: NELSON-MOORE, J.L., COLLINS, D.B., HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULLETIN 40, P. 151.}{Deposit:: EPIS, R.C., WOBUS, R.A., SCOTT, G.R., 1979, GEOLOGIC MAP OF THE BLACK MOUNTAIN QUADRANGLE, FREMONT AND PARK COUNTIES, COLORADO: USGS MAP I-1195, 1:62,500.}{Deposit:: DICKINSON, K.A., 1981, GEOLOGIC CONTROLS OF URAINUM MINERALIZATION IN THE TALLAHASSEE CREEK URANIUM DISTRICT, FREMONT COUNTY, COLORADO: THE MOUNTAIN GEOLOGIST, V. 18, NO. 4, P. 88-94.}{Deposit:: BABCOCK, J.A., 1980, TALLAHASSEE CREEK URANIUM DEPOSITS: DENVER REGIONAL EXPLORATION GEOLOGISTS SOCIETY GUIDEBOOK, P. 15-31.}{Production:: NELSON-MOORE AND OTHERS, 1978}{Reserve-Resource:: BABCOCK, 1980}
Reporter	Collins, Donna B., Keller, John W.