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Darby Extension Occurrence (Derby Extension), McKinley Mountain Area, Wet Mountains Area, Custer Co., Colorado, USA

REF:Deposit:: NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: COLORADO GEOLOGICAL SURVEY BULLETIN 40, P.120
Deposit:: BROCK, M.R. AND SINGEWALD, Q.D., 1968, GEOLOGIC MAP OF THE MOUN
Commodities (Major) - REE, Thorium; (Trace) - Lead, Copper, Barium-Barite
Development Status: Occurrence
Host Rock Unit: Eagle Gulch Latite
Structure: Wet Mountains, Large, Northwest-Trending Dead Mule Gulch Fault; Smaller, Northeast-Trending Fault
Host Rock: Hornblendite, Gneiss, Granite
Tectonic Structure: Central Cordillera (Southern Rocky Mtns)





Map Reference: 38°14'36"N , 105°21'25"W

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Mineral List:
  • Baryte
  • Calcite
  • Chalcopyrite
  • Galena
  • Limonite
  • Pyrite
  • Quartz
  • Siderite
  • Thorite


    9 entries listed. 8 valid minerals.

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    Copyright © Jolyon & Ida Ralph 1993-2008. Jobs in Colorado, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.