| Deposit ID | 10284579 |
|---|---|
| MAS/MILS ID | 0060170012 |
| Record type | Site |
| Current site name | Darrington Mine |
| Alternate or previous names | Gurney Property, Steel Chrome Company Mine ? |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -121.08463, 38.75659 (WGS84) |
| Elevation | 335 |
| Location accuracy | 10(meters) |
Political divisions (FIPS codes)
El Dorado(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Pilot Hill(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 | 011 N | 008 E | 33 | NWSESE | California |
| Commodity | Importance |
|---|---|
| Chromium Critical | Tertiary |
| Iron | Tertiary |
| Materials | Type of material |
|---|---|
| Chromite | Unknown |
| Olivine | Unknown |
| Pyroxene | Unknown |
| Serpentine | Unknown |
| Main Entrance (1) | Mesozoic volcanic rocks, unit 2 (Western Sierra Foothills and Western Klamath Mountains) |
|---|
| Thickness | 35M | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | 300M | ||||||||||||||||||||||||||||||
| Width | 120M | ||||||||||||||||||||||||||||||
| Area | 3HA | ||||||||||||||||||||||||||||||
| Depth to top | 0M | ||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||
| Operation type | Surface-Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1914 |
| Year of first production | 1914 |
| District name | Nigger Hill |
|---|
| Type of mineral rights | Other |
|---|
| Ownership category | Private |
|---|
| Type | Owner |
|---|---|
| Owner | Jerome R. Lewis Et Al |
| Interest | 100 |
| Home office | California |
| Year | 1976 |
| Type | Operator |
|---|---|
| Owner | J. J Taylor, Last Operator Ww 2 |
| Home office | California |
| Year | 1975 |
| Type | In-situ | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Estimate year | 1951 | ||||||||||||||
| Inferred | 100000mt ore | ||||||||||||||
| Total resources | 150000mt ore | ||||||||||||||
| |||||||||||||||
| Type of workings | Surface | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Area | 1HA | ||||||||||||||||||||||||||
| |||||||||||||||||||||||||||
| Type of workings | Underground | ||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Length | 308M | ||||||||||||||||||||||||||||||||||||||
| Overall depth | 9M | ||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060170012 |
TALIAFERRO,NL,1918 COOP WAR MIN.INVEST IN CAL,EL DORADO 18,U
CATER,FW ET AL,1951 CAL DIV MINES BULL 134,PT3,CH4 PP 150-1
ALLGN,JE,1941,CAL DIV MINES,37TH REPT OF STATE MINERALOGIST,
| Subject category | Comment text |
|---|---|
| Deposit | 700-800 TONS MILLING GRADE ORE PRODUCED DURING WWI & WW2. LA ERVES OF 10-15% CR2O3 ORE,BUT IRON VERY HIGH. CR/FE=1.49-1.6 RESERVE ESTIMATES FROM RECORD 701 RESOURCE TOO SMALL FOR COSTING ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-DISSEMIN E,UPPER WORKINGS=S102 7.90,CR2O3 47.50,FEO 15.03,TOTAL FE 17 03 9.95,MGO 12.93,CR/FE 2.36.DISSEMINATED ORE IN PLACE,UPPER GS=S102 11.60,CR2O3 40.19,FEO 13.73,TOTAL FE 20.91,AL203 9.1 4.84,CR/FE 1.69.DISSEMINATED ORE,LOWER WORKINGS=S102 11.30,C .19,FEO 13.02,TOTAL FE 17.69,AL203 8.29,MGO 15.75,CR/FE 2.00 |
| 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.