North Keystone

The North Keystone is a mine located in Calaveras county, California at an elevation of 1,201 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

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.

Site Name

Primary: North Keystone

Commodity

Tertiary: Copper
Tertiary: Gold
Tertiary: Silver

Location

State: California
County: Calaveras

Land Status

Not available

Holdings

Type: Patented

Workings

Type: Underground

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: L

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

Not available

Comments

Comment (Deposit): PRELIMINARY COMMENT. AFTER 2 YEARS OF PREPRODUCTION THIS MIN OPERATE FOR 6 YEARS. ORE WILL BE USED TO FEED THE PENN MIL MILL CAPITAL COSTS ARE ATTRIBUTED TO THE PENN PROPERTY. TH MENT AND PLANT FOR THIS MINING OPERATION WILL SUBSEQUENTLY USED BY THE NEWTON PROPERTY(ID 060050045) REC 101 ESTIMATED LIFE OF 4YR BASED ON PLANT CAPACITY, REC 1 REC 120 BASE YEAR 1970 USED FOR COSTING MINE MINE CAPITAL COSTS TOTAL 1,414,900 (1970 DOLLAR ACQ 30,000 EXPLOR 115,200 DEVEL 483,700 EQUIP 356,500 PLANT 352,200 WORK.CAP. 77,300 MINE OPERATING COST 13.905/MT REC 151 BOXES FLAGGED .0001 AND .00001 NOTE THAT THE MILL CA COSTS ARE ATTRIBUTED TO THE PENN PROPERTY(ID 06009

References

Reference (Deposit): REF 1 CAL. DIV. OF MINES, COPPER IN CALIF., BULL. 144, CALI

Reference (Deposit): OF NAT. RES., 1948. INCLUDES PLATES OF MINE MAPS, REF

Reference (Deposit): 427;EC MINERAL MAP NO 7,1957;CALIFCOUNTY REPT NO 2,P 24-7,13

Reference (Deposit): REF 2 LYMAN MOORE DATA FROM 1970 EVALUATION

Reference (Deposit): REF 3 CAL. DIV. OF MINES AND GEOLOGY, MINES AND MINERAL RES

Reference (Deposit): OF CALAVERAS COUNTY, CALIF., COUNTY REPORT NO.2, 19

Reference (Deposit): MULTIPLE PROPERTY STUDY - - MPF DATA FILED UNDER 0060430158

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.