Mine detail: Little Jim Mine

Previously called 'Southern Corss, MS 4520E.A.K., MS 4520Patented Claims: Little Jim, MS 4520'

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Location

Lat / long:

37.61084, -107.60841

Resource(M)

Primary:	Silver, Gold
Secondary:	Copper, Lead
Tertiary:	Zinc, Manganese
Ore:	Argentite, Chalcopyrite, Silver, Sphalerite, Tetrahedrite
Gangue:	Fluorite, Quartz, Rhodochrosite

Production

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

Geology

Host rock:	Eolus Granite
Host type:	Quartz Monzonite,Granite
Associated rock:	Eolus Granite;Intrusive Bodies And Related Rocks (Younger And Older Bodies Of Chicago Basin Stock)
Associated type:	Quartz Monzonite,Rhyolite,Granite
Structure:	San Juan Uplift, San Juan Basin, San Juan Volcanic Field, Needle Mtns Uplift, Chicago Basin Stock, Eolus Batholith, Trimble Stock
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010708
DEP	10014084
Reference	{Deposit:: SCHMITT, L.J., AND RAYMOND, W.H., 1977, GEOLOGY AND MINERAL DEPOSITS OF THE NEEDLE MOUNTAINS DISTRICT, SOUTH-WESTERN COLORADO: USGS BULL. 1434, 40 P.}{Deposit:: STEVEN, T.A., AND OTHERS, 1969, MINERAL RESOURCES OF THE SAN JUAN PRIMITIVE AREA, COLORADO: USGS BULL. 1261-F, P. 30-32, 55-67, 96. 160-163.}{Deposit:: CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE NEEDLE MOUNTAINS QUADRANGLE, COLORADO: USGS FOLIO 131.}{Deposit:: BLM MINERAL SURVEY MS 4520}
Reporter	Schwochow, Stephen D.