| Deposit ID | 10260270 |
|---|---|
| MRDS ID | M006029 |
| MAS/MILS ID | 0060090506 |
| Record type | Site |
| Current site name | North Keystone |
| Related records | 10028815 |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -120.65021, 37.98741 (WGS84) |
| Elevation | 366 |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
Calaveras(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Copperopolis(quadrangle 1:24,000 scale)
Oakdale(quadrangle 1:100,000 scale)
San Jose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
Upper Stanislaus(hydrologic unit)
San Joaquin(hydrologic accounting unit)
San Joaquin(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Calaveras |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 002 N | 012 E | 34 | NW | California |
| Commodity | Importance |
|---|---|
| Copper | Tertiary |
| Gold | Tertiary |
| Silver | Tertiary |
| Main Entrance (1) | -120.65021, 37.98741 |
|---|
| Operation type | Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Deposit size | Large |
| Significant | No |
| Type of mineral rights | Patented |
|---|
| Type of workings | Underground | ||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Overall depth | 340M | ||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060090506 | |
| USGS | Mineral Resources Data System | MRDS | M006029 | MAS references MRDS |
REF 1 CAL. DIV. OF MINES, COPPER IN CALIF., BULL. 144, CALI
OF NAT. RES., 1948. INCLUDES PLATES OF MINE MAPS, REF
427;EC MINERAL MAP NO 7,1957;CALIFCOUNTY REPT NO 2,P 24-7,13
REF 2 LYMAN MOORE DATA FROM 1970 EVALUATION
REF 3 CAL. DIV. OF MINES AND GEOLOGY, MINES AND MINERAL RES
OF CALAVERAS COUNTY, CALIF., COUNTY REPORT NO.2, 19
MULTIPLE PROPERTY STUDY - - MPF DATA FILED UNDER 0060430158
| Subject category | Comment text |
|---|---|
| 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 |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 10-FEB-1994 | Lewis, J.D. | U.S. Bureau of Mines |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
These are landing pages for further research — the state agencies don't currently expose per-mine deep links.