Commodities
PrimaryLead, Silver, Copper
SecondaryZinc
TertiaryGold, Cobalt
Commodity typeM
Deposit
Deposit typeVein
Deposit sizeS
WorkingsUnderground
Materials
Ore mineralsChalcopyrite, Galena, Sphalerite
Geology
Host rockSchist
Associated rockDiorite
Economic & production
Development statusPast Producer
Production years1806 , 1865 , 1910 - 1920
Identification
Deposit ID10067584
MRDS IDW000369
Alternate namesJohnson Group, Johnston
RegionNA
Data scoreB
Coordinates37.18687, -119.98737
References
AUBURY, L. E., 1908 , COPPER RESOURCES OF CALIFORNIA BULL. 50 ; CALIF. MIN. BUR., P. 270 - 272 .ERIC, J. H., 1948 COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 261LOGAN, C. A., 1950 , MINES AND MINERAL RESOURCES OF MADERA COUNTY, CA.; CA. JOUR. MINES AND GEOLOGY, VOL. 46 , NO. 4 , P. 450 .MCLAUGHLIN, R. P., 1916 , MADERA COUNTY; 14TH REPT. STATE MIN.; CALIF. MIN. BUR., P. 538 .1. MCLAUGHLIN, 2. LOGAN, 3. ERICUNPUBLISHED CO REPORT