Description
Neil Foreman And J.A. Mcgregor
Commodities
PrimaryThorium
TertiaryREE
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeN
Orebody formTABULAR
Ore controlNe-Trending Vein Cutting Greenstone
Materials
Ore mineralsThorite
GangueAllophane, Apatite, Barite, Chlorite, Clinozoisite, Goethite, Hematite, Quartz, Rutile, Tourmaline, Xenotime
Geology
Host rockQuartzite,Schist,Amphibolite · Dubois Greenstone--Felsite And Felsite Porphyry;Dubois Greenstone--Hornblende Schist And Amphibolite
Associated rockSyenite,Diabase,Gabbro · Thorium Vein;Syenite;Gabbro;Diabase Dikes
StructureGunnison Uplift, San Juan Volcanic Field, Gunnison Gold Belt, Iron Hill Alkalic Complex, Tolvar Peak Stock
Tectonic settingCentral Cordillera (Southern Rocky Mtns)
Economic & production
Development statusOccurrence
Discovery year1949
Identification
Deposit ID10014417
MRDS IDD011172
Alternate namesUnpatented Claims: Little Johnnie Nos. 1-2, Cathey Nos. 1-5, Charley Nos. 1-5, Little Johnnie Extension
RegionNA
Data scoreB
Coordinates38.32167, -107.08674
References
HEDLUND, D.C., AND OLSON, J.C., 1975, GEOLOGIC MAP OF THE POWDERHORN QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1178.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.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.OLSON, J.C., AND WALLACE, S.R., 1956, THORIUM AND RARE-EARTH MINERALS IN POWDERHORN DISTRICT, GUNNISON COUNTY, COLORADO: USGS BULL. 1027-0.NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 175.ADAMS, J.W., AND MOORE, F.B., 1951, AEC PRELIM. RECON. REPT. RR-95.COLORADO DIV. MINES INF. REPTS.