Mine detail: Newman Mines

Previously called 'Swansea, Klingender, and Chestnut TunnelsPatented Claims: Swansea, MS 434Chestnut, MS 435Newman, MS 436a'

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Location

Lat / long:

37.68279, -108.02732

Resource(M)

Primary:	Silver, Lead, Zinc
Secondary:	Copper, Gold
Tertiary:	Manganese
Gangue:	Quartz, Rhodochrosite, Rhodonite
Orebody form:	TABULAR
Discovery year:	1879

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
First production started:	1879

Geology

Host rock:	Hermosa Formation
Host type:	Shale
Associated rock:	Hornblende Latite Porphyry
Associated type:	Latite
Structure:	San Juan Uplift, Paradox Basin, Rico Dome
Tectonic:	Central Cordillera (Southern Rocky Mtns)
Alteration processes:	Oxidation Of Rhodochrosite To Mn Oxides; Alteration Of Ag Sulfides To Native Ag

References

MRDS	D010779
DEP	10014134
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. 328-334.}{Deposit:: CROSS, WHITMAN, AND RANSOME, F.L., 1905, DESCRIPTION OF THE RICO QUADRANGLE: USGS FOLIO 130.}{Deposit:: BLM MINERAL SURVEYS MS 434, 435, 436A&B}
Reporter	Schwochow, Stephen D.