Mine detail: Lexington Tunnel

Previously called ''

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Location

Lat / long:

37.68307, -108.03037

Resource(M)

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

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1940

Geology

Host rock:	Hermosa Formation
Host type:	Shale,Sandstone
Associated rock:	Hornblende Latite Porphyry;Diabase (Basalt)
Associated type:	Diabase,Latite
Structure:	San Juan Uplift, Paradox Basin, Rico Dome
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010774
DEP	10014130
Reference	{Deposit:: MCKNIGHT, E.T., 1974, GEOLOGY AND ORE DEPOSITS OF THE RICO DISTRICT, COLORADO: USGS PROF. PAPER 723, P. 73-75.}{Deposit:: PRATT, W.P., AND OTHERS, 1969, GEOLOGIC MAP OF THE RICO QUADRANGLE, DOLORES AND MONTEZUMA COUNTIES, COLORADO: USGS MAP GQ-797.}{Deposit:: RANSOME, F.L., 1901, THE ORE DEPOSITS OF THE RICO MOUNTAINS, COLORADO: USGS 22D ANN. REPT., PT. 2, P. 339-340.}{Deposit:: CROSS, WHITMAN, AND RANSOME, F.L., 1905, DESCRIPTION OF THE RICO QUADRANGLE: USGS FOLIO 130.}{Deposit:: COLORADO DIV. MINES INF. REPT. AND ANNUAL OPERATOR REPTS.}{Production:: COLORADO DIV. MINES ANNUAL OPERATOR REPTS.}
Reporter	Schwochow, Stephen D.