Mine detail: Bay City Mine

Previously called ''

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Location

Lat / long:

37.36445, -108.07926

Resource(M)

Primary:	Gold, Silver, Copper
Secondary:	Lead
Ore:	Chalcopyrite
Discovery year:	1987

Production

Operation type:	Unknown
Deposit type:	Replacement
Production size:	Small
Development status:	Past Producer
First production started:	1876
Last production ended:	1918

Geology

Host rock:	Dolores Formation
Host type:	Marble,Limestone
Associated rock:	Porphyritic Rocks--Diorite-Monzonite Porphyry
Associated type:	Diorite
Structure:	San Juan Uplift, Four Corners Platform, La Plata Dome
Tectonic:	Central Cordillera (Southern Rocky Mtns)

References

MRDS	D010802
DEP	10014152
Reference	{Deposit:: ECKEL, E.B., AND OTHERS, 1949, GEOLOGY AND ORE DEPOSITS OF THE LA PLATA DISTRICT, COLORADO: USGS PROF. PAPER 219, P. 68-69, 89-90}{Deposit:: COLORADO DIV. MINES INF. REPT.}{Deposit:: BLM MINERAL SURVEY MS 1140}{Production:: ECKEL AND OTHERS, 1949, P. 89}
Reporter	Schwochow, Stephen D.