Mine detail: Mayesville District

Previously called ''

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Location

Lat / long:

40.69387, -105.62977

Resource(B)

Primary:	Uranium
Tertiary:	Gold, Silver, Lead, Copper, Beryllium, Mica, Feldspar, Bismuth, REE
Ore:	Beryl, Chalcopyrite, Galena, Gold, Muscovite, Pyrite, Uranophane
Gangue:	Biotite, Limonite, Quartz

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer

Geology

Host rock:	Quartzofeldspathic Mica Schist And Gneiss And Hornblende Gneiss;Granitic Gneiss
Host type:	Schist,Gneiss
Associated rock:	Pegmatite
Associated type:	Pegmatite
Structure:	Front Range Uplift, Sherman Batholith, Poudre River Shear Zone
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Fe Oxidation

References

MRDS	D010395
DEP	10101853
Reference	{Deposit:: LOVERING, T.S., AND GODDARD, E.N., 1950, GEOLOGY AND ORE DEPOSITS OF THE FRONT RANGE, COLORADO: USGS PROF. PAPER 223, P. 286.}{Deposit:: PEARSON, R.C., AND OTHERS, 1981, MINERAL RESOURCES OF THE COMANCHE-BIG SOUTH, NEOTA-FLAT TOP, AND NEVER SUMMER WILDERNESS STUDY AREAS, NORTH-CENTRAL COLORADO: USGS OFR 81-578.}{Deposit:: NELSON-MOORE, J.L., AND OTHERS, 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 210.}{Deposit:: HANLEY, J.B., AND OTHERS, 1950, PEGMATITE INVESTIGATIONS IN COLORADO, WYOMING, AND UTAH, 1942-1944: USGS PROF. PAPER 227, P. 104.}
Reporter	Schwochow, Stephen D.