Mine detail: Eureka Gold Qtz

Previously called 'Roannaise'

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Location

Lat / long:

39.22433, -121.04325

Resource(M)

Primary:	Gold
Secondary:	Lead, Zinc, Copper
Ore:	Chalcopyrite, Galena, Gold, Pyrite, Sphalerite
Gangue:	Quartz

Production

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

Geology

Host type:

Diabase

References

MRDS	C011202
DEP	10007390
Reference	{Deposit:: LOGAN, C. A., 1941 , MINERAL RESOURCES OF NEVADA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 37 , NO. 3 , PL. 3 .}{Deposit:: JOHNSTON, W. D., 1940 , THE GOLD QUARTZ VEINS OF GRASS VALLEY, CALIFORNIA: US GEOLOGICAL SURVEY PROFESSIONAL PAPER 194 , P. 94 , 95 .}{Deposit:: MACBOYLE, E., 1919 , MINES AND MINERAL RESOURCES OF NEVADA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 16, P. 166 - 167 .}{Production:: JOHNSTON, 1940 MACBOYLE, 1919}
Reporter	Bowman, J. And Albers, J., Mosier, Dan