The White Rock is a copper mine located in Mariposa county, California.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
White Rock MRDS details
Site Name
Primary: White Rock
Secondary: Copper King
Secondary: White Knob
Commodity
Primary: Copper
Secondary: Gold
Secondary: Silver
Location
State: California
County: Mariposa
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: James Helm
Years: 1943 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Trough
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Production): SEVERAL CARLOADS OF ORE WHERE SHIPPED 1900 - 1902 , YIELDED 35 % CU, ONE CARLOAD RAN 40 % CU. OXIDIZED ORE CARRIED $1.50 - $2.50 AU/TON (OLD PRICE OF AU) AND 3 1/2 OZ/TON AG
Comment (Deposit): OXIDE AND CARBONATE ORE REACHES DEPTH OF 100 FT., SULFIDES BELOW THAT DEPTH.
Comment (Workings): PRINCIPAL WORKING: 150 FT. SHAFT WITH 175 FT. OF DRIFTS. NUMEROUS MINOR WORKINGS
Comment (Deposit): REPORTED TO BE A PATENTED MINE BUT NOT ON COUNTY ASSESSOR'S LIST IN 1954.
References
Reference (Deposit): AUBURY, L. E., 1908 , COPPER RESOURCES OF CALIFORNIA BULL. 50 ; CALIF. MIN. BUR., P. 262 - 264 .
Reference (Deposit): BOWEN, O. E. AND CLIFFTON, G. H., 1957 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY, CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 1 & 2 , P. 231 .
Reference (Production): BOWEN AND CLIFFTON, 1957 , P. 231 (SEE REF.)
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
