Mine detail: Duncan

Previously called 'Lost Douglas'

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Location

Lat / long:

37.49076, -120.21682

Resource(M)

Primary:	Gold
Secondary:	Silver
Ore:	Gold, Pyrite, Silver
Orebody form:	PINCH & SWELL
Discovery year:	1870

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Production years:	1897 - 1898 , 1927 , 1932 - 1935

Geology

Host type:

Hornfels,Greenstone,Schist

References

MRDS	M009441
DEP	10030938
Reference	{Deposit:: BOWEN, O. E., JR., & GRAY, H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIF.: CALIF. JOUR. MINES & GEOL., VOL. 53 , NOS. 1 & 2 , P. 96 , 256 .}{Deposit:: LAIZURE, C. MCK., 1928 , S. F. FIELD DIV. - MARIPOSA COUNTY: 24TH REPORT STATE MINERALOGIST, VOL. 24 , NO. 2 , P. 85 .}{Production:: BOWEN AND GRAY, 1957}
Reporter	Gere, W., Hayden, F. (Albers, J.)