Mine detail: Keystone Mine

Previously called ''

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Location

Lat / long:

40.61911, -111.54189

Resource(M)

Primary:	Lead, Copper
Ore:	Galena, Malachite

Production

Operation type:	Unknown
Deposit type:	Replacement
Production size:	Small
Development status:	Past Producer
Production years:	1903 - 1926

Geology

Associated type:	Diorite
Structure:	The Sedimentary Rocks Are Broken And Faulted By Fissures Striking N 40 - 60 E, Dip 40 - 70 Se. The Area Is Complexly Faulted. General Strike Of Bedrock Is N 70 - 80 E, Dip 30 - 40 Nw.
Alteration processes:	Silicified Limestone

References

MRDS	M057616
DEP	10041814
Reference	{Deposit:: BOUTWELL, J.M., 1912 , GEOL & ORE DEP OF PARK CITY DIST: USGS PP 77 , P. 219}{Deposit:: BARNES, M.P. & SIMOS, J.G., 1968 , ORE DEPOSITS OF PARK CITY DIST IN ORE DEPOSITS OF THE US, 1933 - 67 , GRATON-SALES VOL 2 , P. 1123}{Deposit:: BAKER, A.A., CALKINS, F.C., CRITTENDEN, M.D. JR., BROMFIELD, C.S., 1966 , GEOL MAP OF BRIGHTON QUAD: USGS MAP GQ - 534}{Production:: BARNES & SIMOS, 1968}
Reporter	Wong, George (Tooker, Ed)