| Deposit ID | 10114223 |
|---|---|
| MRDS ID | M004675 |
| MAS/MILS ID | 0060010029 |
| Record type | Site |
| Current site name | Mendenhall No. 1 |
| Alternate or previous names | Cedar Mountain Mine, Mendenhall Chrome Mines, Newman Mine, Mendenhall Mine |
| Related records | 10027975 |
| Point of reference | Main Entrance |
|---|---|
| Geographic coordinates: | -121.61293, 37.55741 (WGS84) |
| Elevation | 1070 |
| Location accuracy | 1000(meters) |
Political divisions (FIPS codes)
Alameda(county)
California(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Cedar Mountain(quadrangle 1:24,000 scale)
Stockton(quadrangle 1:100,000 scale)
San Jose(quadrangle 1:250,000 scale)
Hydrologic units (watersheds)
San Francisco Bay(hydrologic unit)
San Francisco Bay(hydrologic accounting unit)
San Francisco Bay(hydrologic subregion)
California(hydrologic region)
| Country | State | County |
|---|---|---|
| United States | California | Alameda |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| Mount Diablo | 004 S | 003 E | 26 | NENWSE | California |
| Commodity | Importance |
|---|---|
| Chromium Critical | Tertiary |
| Iron | Tertiary |
| Materials | Type of material |
|---|---|
| Antigorite | Unknown |
| Chlorite | Unknown |
| Chromite | Unknown |
| Chrysotile | Unknown |
| Uvarovite | Unknown |
| Main Entrance (1) | -121.61293, 37.55741 |
|---|
| Strike | N00W | ||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dip | 30N | ||||||||||||||||||||||||||||||||||||||
| Area | 12HA | ||||||||||||||||||||||||||||||||||||||
| Depth to top | 0M | ||||||||||||||||||||||||||||||||||||||
| |||||||||||||||||||||||||||||||||||||||
| Operation type | Surface-Underground |
|---|---|
| Development status | Past Producer |
| Commodity type | Metallic |
| Significant | No |
| Discovery year | 1882 |
| Year of first production | 1885 |
| District name | Cedar Mountain District |
|---|
| Type of mineral rights | Fee Ownership |
|---|
| Ownership category | Private |
|---|
| Type | Owner |
|---|---|
| Owner | Vernon E. And Dorothy Rose |
| Interest | 100 |
| Home office | California |
| Year | 1976 |
| Type | Unknown |
|---|---|
| Owner | Gerard M. And Marie T. Lafon May Own portion Of Mine Area |
| Home office | California |
| Year | 1976 |
| Type of workings | Surface | ||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Area | 2HA | ||||||||||||||||||||||||||
| |||||||||||||||||||||||||||
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| U.S. Bureau of Mines | Minerals Availability System | MAS | 0060010029 | |
| USGS | Mineral Resources Data System | MRDS | M004675 | MAS references MRDS |
USGS BULL 430 1910 CHROMITE IN CALIFORNIA PP 173-174
CDMG 17TH REPT OF STATE MINEROLOGIST 1920 P 21
CDMG BULL 134 PT 2 CHAP 2 1953,ALAMEDA COUNTY P.52
CDMG 11TH REPT OF STATE MINERALOGIST 1893 P.122
| Subject category | Comment text |
|---|---|
| Deposit | SIGNIFICANT PRODUCTION FROM THIS MINE 1953-1956 ALTHOUGH NO DATA ON RESERVES IS AVAILABLE RESERVES PROBABLY CONCENTRATES 1953-1956 RAN 43.3 TO 51.3 PERCENT CR2O3 11.7 T PERCENT FE AND 2.5 TO 3.0 CR TO FE RATIO: INSUFFICIENT DATA MATRIX CALCULATIONS ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-MASSIVE 2 18.50,CR2O3 36.54,FEO 09.62,TOTAL FE 12.87,AL203 05.80,MGO CR/FE 2.50. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 05-NOV-84 | Unknown | 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.