Mine detail: Little Johnnie Mine

Previously called 'Unpatented Claims: Little Johnnie Nos. 1-2Cathey Nos. 1-5Charley Nos. 1-5Little Johnnie Extension'

Location:	Gunnison County, Colorado, United States, North America
Lat / long:	38.32167, -107.08674
dep_id:	10014417
mrds_id:	D011172
Commodity type:	metallic
Major mineral:	Thorium
Trace mineral:	REE
Operation type:	Unknown
Deposit type:	Vein
Production size:	No production occurred
Development status:	Occurrence
ore:	Thorite
gangue:	Allophane, Apatite, Barite, Chlorite, Clinozoisite, Goethite, Hematite, Quartz, Rutile, Tourmaline, Xenotime
orebody_fm:	TABULAR
ore_ctrl:	Ne-Trending Vein Cutting Greenstone
Reporter:	Schwochow, Stephen D.
hrock_unit:	Dubois Greenstone--Felsite And Felsite Porphyry;Dubois Greenstone--Hornblende Schist And Amphibolite
hrock_type:	Quartzite,Schist,Amphibolite
arock_unit:	Thorium Vein;Syenite;Gabbro;Diabase Dikes
arock_type:	Syenite,Diabase,Gabbro
Structure:	Gunnison Uplift, San Juan Volcanic Field, Gunnison Gold Belt, Iron Hill Alkalic Complex, Tolvar Peak Stock
tectonic:	Central Cordillera (Southern Rocky Mtns)
disc_yr:	1949
discr:	Neil Foreman And J.A. Mcgregor
References:	Deposit:: HEDLUND, D.C., AND OLSON, J.C., 1975, GEOLOGIC MAP OF THE POWDERHORN QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1178. 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. Deposit:: OLSON, J.C., AND HEDLUND, D.C., 1981, ALKALIC ROCKS AND RESOURCES OF THORIUM AND ASSOCIATED ELEMENTS IN THE POWDERHORN DISTRICT, GUNNISON COUNTY, COLORADO: USGS PROF. PAPER 1049-C. Deposit:: OLSON, J.C., AND WALLACE, S.R., 1956, THORIUM AND RARE-EARTH MINERALS IN POWDERHORN DISTRICT, GUNNISON COUNTY, COLORADO: USGS BULL. 1027-0. Deposit:: NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 175. Deposit:: ADAMS, J.W., AND MOORE, F.B., 1951, AEC PRELIM. RECON. REPT. RR-95. Deposit:: COLORADO DIV. MINES INF. REPTS.