The Alta is a copper mine located in Del Norte 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.
Alta MRDS details
Site Name
Primary: Alta
Secondary: Alta California
Commodity
Primary: Copper
Location
State: California
County: Del Norte
District: Low Divide
Land Status
Land ownership: National Forest
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
Not available
Workings
Type: Underground
Ownership
Owner Name: John I. Noce
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: Klamath Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Analytical Data: 15 - 18 % CU
Materials
Not available
Comments
Comment (Commodity): LOW GRADE AT DEPTH
Comment (Production): SHIPPED HIGH-GRADE ORE TO FOREIGN SMELTERS PRIOR TO 1867. RECORD OF SHIPMENTS SHOW RETURNS OF $41 TO $102 PER TON. WORKINGS WERE BEING RE-OPENED IN 1951.
Comment (Workings): INCLINED SHAFT AT 63 DEG., DRIVEN N 48 E AND 455 FT. DEEP, 5 LEVELS AT 96 , 112 , 162 , 228 AND 324 FT. ORE WAS STOPED FROM DRIFTS ON ALL EXCEPT BOTTOM LEVEL.
Comment (Deposit): ONE OF THE FIRST COPPER MINES IN CALIFORNIA. COMPRISED OF 74.36 ACRES.
References
Reference (Production): J.C. O'BRIEN, P. 276
Reference (Deposit): AUBURY, L.E., 1908 , COPPER RESOURCES OF CALIFORNIA BULL. 50 : CALIF. MIN. BUR., P. 136 - 138
Reference (Deposit): J.C. O'BRIEN, 1952 ; MINES AND MINERAL RESOURCES OF DEL NORTE COUNTY; CALIF. JOUR. OF MINES AND GEOLOGY, VOL. 48 , NO. 4 ; DIV. OF MINES, P. 276
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.
