Mine detail: Columbus Mine

Previously called 'Patented Claims: Lorrillard, MS 1142Little Mack, MS 1144Moonlight, MS 9179Columbus, MS 9223Maverick, MS 9223Gold Cup, MS 9223Last Chance, MS 17252Lucky Boy, MS 19405'

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Location

Lat / long:

37.42779, -108.01759

Resource(M)

Primary:	Gold, Silver
Secondary:	Lead, Copper
Tertiary:	Tellurium
Ore:	Galena, Gold, Pyrite, Sylvanite
Gangue:	Barite, Calcite, Chlorite, Quartz, Sericite
Discovery year:	1895

Production

Operation type:	Underground
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
First production started:	1895
Last production ended:	1913

Geology

Host rock:	Cutler Formation
Host type:	Diorite
Associated rock:	Nonporphyritic Rocks--Diorite
Associated type:	Diorite
Structure:	San Juan Uplift, Four Corners Platform, La Plata Dome, Lewis Mtn Diorite Stock
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010810
MAS	80670061
DEP	10014159
Reference	{Deposit:: ECKEL, E.B., AND OTHERS, 1949, GEOLOGY AND ORE DEPOSITS OF THE LA PLATA DISTRICT, COLORADO: USGS PROF. PAPER 219, P. 73-76, 101-103, PL. 16.}{Deposit:: Neubert and others, 1992, Mineral Appraisal of the San Juan National Forest, Colorado: USBM MLA 2-92, fig. 39, p. 111; p. 114-115.}{Deposit:: BLM MINERAL SURVEY MS 1142, 1144, 9179, 9223, 17252, 19405}{Deposit:: REED, J.R., 1936, REPORT ON COLUMBUS MINES CO., LA PLATA COUNTY, COLORADO--LUCKY BOY, LAST CHANCE, MOONLIGHT, ETC.: UNPUB. ENG. REPT., 3 P.}{Deposit:: COLORADO DIV. MINES INF. REPT.}{Production:: ECKEL AND OTHERS, 1949, P. 101-102 (AS COMPILED FROM USGS AND USBM RECORDS)}
Reporter	Buckingham, David A., Schwochow, Stephen D.