| Deposit ID | 10115362 |
|---|---|
| MRDS ID | M007304 |
| MAS/MILS ID | 0060170032 |
| Record type | Site |
| Current site name | Walker Mine |
| Alternate or previous names | Darrington, Walker Property |
| Related records | 10029632 |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -121.07323, 38.6766 (WGS84) |
| Elevation | 274 |
| Location accuracy | 100(meters) |
Political divisions (FIPS codes)
El Dorado(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Clarksville(quadrangle 1:24,000 scale)
Sacramento(quadrangle 1:100,000 scale)
Sacramento(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
South Fork American(hydrologic unit)
Lower Sacramento(hydrologic accounting unit)
Sacramento(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | El Dorado |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 010 N | 008 E | 35 | SE | California |
| Commodity | Importance |
|---|---|
| Chromium Critical | Tertiary |
| Iron | Tertiary |
| Materials | Type of material |
|---|---|
| Chromite | Unknown |
| Olivine | Unknown |
| Serpentine | Unknown |
| Main Entrance (1) | Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains) |
|---|
| Strike | N35W | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dip | 75E | ||||||||||||||||||||||||||||||
| Length | 30M | ||||||||||||||||||||||||||||||
| Width | 1M | ||||||||||||||||||||||||||||||
| Area | 15HA | ||||||||||||||||||||||||||||||
| Depth to top | 0M | ||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||
| Operation type | Surface-Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Year of first production | 1917 |
| District name | Clarksville |
|---|
| Type of mineral rights | Patented |
|---|---|
| Type of mineral rights | Private Lease |
| Type of mineral rights | State Lease |
| Ownership category | Private |
|---|
| Type | Owner |
|---|---|
| Owner | John Hancock Mutual Life Ins Co,Owner Of Surface,1976 |
| Interest | 100 |
| Home office | Massachusetts |
| Year | 1976 |
| Type | Owner |
|---|---|
| Owner | Bankers Title Guranty Co,Owner Of Mineral Rights |
| Interest | 90 |
| Home office | California |
| Year | 1976 |
| First year | 1976 |
| Type | In-situ | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1951 | |||||||||||||||||||||
| Inferred | 1500mt ore | |||||||||||||||||||||
| Total resources | 2000mt ore | |||||||||||||||||||||
| ||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060170032 | |
| USGS | Mineral Resources Data System | MRDS | M007304 | MAS references MRDS |
CALIF JOUR OF MINE AND GEOL,VOL.52,NO 4,P. 393,CLARKE AND CA
956
CDMG BULL 134 PT 3,CHAPT 4 P.126,CATER,1951
COOPERATIVE WAR MINERAL INVEST INCALIF UNPUBL REPORT,TALIAFE
8
| Subject category | Comment text |
|---|---|
| Deposit | AVERAGE MINABLE GRADE 10% CR2O3.WITH 15-17% FEO TALIAFERRO AND CATER ESTIMATE 1500 TONS OF ORE IN SIGHT.RECO 703. HOUSING DEVELOPMENT WITHIN 1MILE OF MINE. -INSUFFICIEN RCE FOR COSTING ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-DISSEMIN E=S102 07.94,CR2O3 40.19,FEO 14.85,TOTAL FE 22.51,AL203 09.4 2.24,CR/FE 1.57. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 27-FEB-1984 | Wetzel, Nicholas | 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.