Mine detail: Tyro

Previously called 'Rittershoffen'

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Location

Lat / long:

37.69353, -120.20488

Resource(M)

Primary:	Gold
Secondary:	Copper
Ore:	Chalcopyrite, Covellite, Gold
Gangue:	Quartz
Discovery year:	1853

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer

Geology

Host type:

Slate

References

MRDS	M009323
DEP	10030860
Reference	{Deposit:: BOWEN, O. E., JR., GRAY, C. H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 53 , NOS. 1 AND 2 , P. 175 - 176 312}{Deposit:: LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION, IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU, P. 119}{Production:: BOWEN & GRAY, 1957}
Reporter	Bowman, J. And Albers, J.