Mine detail: Bonnie Girl Mine

Previously called 'Baker Contact'

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Location

Lat / long:

37.39945, -108.03982

Resource(M)

Primary:	Gold, Silver
Tertiary:	Copper
Ore:	Chalcopyrite
Gangue:	Garnet, Magnetite
Discovery year:	1895

Production

Operation type:	Unknown
Deposit type:	Vein
Production size:	Small
Development status:	Past Producer
First production started:	1895
Last production ended:	1919

Geology

Host rock:	Cutler Formation
Host type:	Shale,Sandstone
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)
Alteration processes:	Oxidation Of Pyrite To Limonite

References

MRDS	D010805
DEP	10014155
Reference	{Deposit:: ECKEL, E.B., AND OTHERS, 1949, GEOLOGY AND ORE DEPOSITS OF THE LA PLATA DISTRICT, COLORADO: USGS PROF. PAPER 219, P. 67-68, 96-97}{Production:: ECKEL AND OTHERS, 1949 (AS COMPILED FROM USGS AND USBM RECORDS)}
Reporter	Schwochow, Stephen D.