The Porter and Springs is a mine located in Calaveras county, California at an elevation of 1,739 feet.
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
Elevation: 1,739 Feet (530 Meters)
Commodity:
Lat, Long: 38.0419, -120.64580
Map: View on Google Maps
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.
Porter and Springs MRDS details
Site Name
Primary: Porter and Springs
Secondary: Clary and Langford
Commodity
Tertiary: Chromium
Tertiary: Iron
Location
State: California
County: Calaveras
District: Black Creek Area
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Type: Other
Workings
Type: Surface
Ownership
Owner Name: C. J Tiscornia Ranches Inc.
Percent: 100.0
Home Office: California
Info Year: 1976
Owner Name: J. E. Porter And J. H. Spring,Last Operators-1918
Home Office: California
Info Year: 1976
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Mining Method: Unknown
Year First Production: 1900
Discovery Year: 1900
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Unknown: Chromite
Unknown: Penninite
Unknown: Pyroxene
Unknown: Serpentine
Unknown: Olivine
Comments
Comment (Deposit): CATER(1948) STATES THAT ORE WAS 45 PERCENT CR2O3. RESERVES ESTIMATED BY CATER AS PROBABLY NEGLIGIBLE. MINE VISTED 17 SPET 1975 BY CDMG. THE AVERAGE MINABLE GRADE OF CHROMITE IS 45.6 PERCENT & IRON PERCENT. INSUFFICIENT DATA FOR MATRIX CALCULATIONS. ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-MASSIVE 2 07.00,CR2O3 46.60,FEO 08.31,TOTAL FE 12.87,AL203 12.99,MGO CR/FE 3.19.
References
Reference (Deposit): CAL. DIV MINES GEOL BULL 134 PT 3CHAP 3, P.47, PL.5
Reference (Deposit): CAL. STATE MINING BUR BULL 76, . P121 1918
Reference (Deposit): CAL. COUNTY REPT NO.2 P.128,PL.D 1962
Reference (Deposit): COOP WAR MINERAL INVEST PROJ.,CALAVERAS CO. NO.10 TALIAFERRO
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.
