Mine detail: Rico-Aspen Mine

Previously called 'Aspen, MS 6512Last Chance, MS 6512Brittle Silver, MS 7458Silver Glance, MS 6201Silver Glance No. 2, MS 6201Snow Flake, MS 6216Vestal, MS 6252Syndicate TunnelPatented Claims: Telegraph, MS 780Syndicate, MS 2185aStar, MS 6199Selenide, MS 7458Silver Glance No. 4, MS 7976Stephanite, MS 7980'

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Location

Lat / long:

37.67918, -108.02926

Resource(M)

Primary:	Silver, Lead, Zinc
Secondary:	Copper, Gold
Tertiary:	Bismuth
Ore:	Argentite, Chalcopyrite, Pyrite, Sphalerite
Gangue:	Calcite, Dolomite, Quartz, Siderite
Orebody form:	TABULAR

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Last production ended:	1939

Geology

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

References

MRDS	D010785
DEP	10014138
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., THE ORE DEPOSITS OF THE RICO MOUNTAINS, COLORADO: USGS 22D ANN. REPT., PT. 2, P. 335-340.}{Deposit:: CROSS, WHITMAN, AND RANSOME, F.L., 1905, DESCRIPTION OF THE RICO QUADRANGLE: USGS FOLIO 130.}{Deposit:: COLORADO DIV. MINES INF. REPTS. AND ANNUAL OPERATOR REPTS.}{Deposit:: BLM MINERAL SURVEYS MS 780, 2185A, 6199, 6201, 6216, 6252, 7458, 7459, 7976, 7980}{Deposit:: BASTIN, E.S., 1922, SILVER ENRICHMENT IN THE SAN JUAN MOUNTAINS, COLORADO: USGS BULL. 735-D, P. 114-115.}{Production:: COLORADO DIV. MINES ANNUAL OPERATOR REPTS.}
Reporter	Schwochow, Stephen D.