Mine detail: Yellowhorn

Previously called 'Jim Blaine Group'

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Location

Lat / long:

42.63954, -123.31004

Resource(M)

Primary:	Gold
Secondary:	Silver
Tertiary:	Copper, Lead
Ore:	Chalcopyrite, Galena, Gold, Pyrite, Pyrrhotite
Gangue:	Calcite, Quartz

Production

Operation type:	Unknown
Production size:	Small
Development status:	Producer
Production years:	1925

Geology

Host rock:	Applegate Group
Host type:	Greenstone
Alteration processes:	Pyrite More Abundant In Wallrock Than In Vein

References

MRDS	M061245
DEP	10042927
Reference	{Deposit:: RAMP, L. AND PETERSON, N.V., 1979, GEOLOGY AND MINERAL RESOURCES OF JOSEPHINE COUNTY, OREGON; ODGMI BULL. 100, 45P}{Deposit:: OREGON METAL MINES HANDBOOK, 1942, ODGMI BULL. 14-C, VOL. 2, SEC. 1, P.119}{Production:: USBM}
Reporter	Johnson, Maureen G., Smith, Roscoe M., Gray, Jerry J.