1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Fiddler's Green, Farmer Property

Occurrence in Placer county in California, United States with commodity Chromium
Map
XML
JSON
KML
C

Geologic information

Identification information

Deposit ID 10032082
MRDS ID M012262
Record type Site
Current site name Fiddler's Green, Farmer Property
Related records 10140262

Geographic coordinates

Geographic coordinates: -120.91936, 38.96183 (WGS84)
(click for info)

Geographic areas

Country State County
United States California Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 013N 009E 24 NW California

Comments on the location information

  • WARING, 1917 REPORTED THE DEPOSIT TO BE IN SECT. 29BUT RYNEARSON BELIEVES THIS TO BE AN ERROR, AND THE DEPOSIT ISREALLY IN SECT. 24.; LATITUDE-LONGITUDE VALUES CALCULATED FROM TOWNSHIP, RANGE, SECTION.

Commodities

Commodity Importance
Chromium Primary

Materials information

Materials Type of material
Chromite Ore
Magnetite Gangue

Analytical data

Result ORE ASSAYED 32.3 % CR2O3
Result 13.0 % SIO2

Nearby scientific data

(1) -120.91936, 38.96183
ListMap

Ore body information

  • General form POD

Comments on the geologic information

  • GEOL.DESC: WORKINGS OPENED A SERIES OF SMALL "BUNCHES" OF ORE STRIKING N. 80 DEG. E. ALONG THE CONTACT BETWEEN THE SERPENTINE AND AMPHIBOLITE SCHIST. ORE REPORTED TO BE FINE-GRAINED AND CONTAINED MAGNETITE. ANOTHER DEPOSIT ABOUT 50 FT. LOWER IN ALT. WAS A STRINGER OF LOWGRADE ORE (DISSEMINATED?) STRIKING N. 60 DEG. E. AND DIPPING 60 DEG. SE.

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Gas Canyon Area

Ownership information

  • Type Operator
    Owner R. H. Farmer
    First year 1918

Comments on the workings information

  • ORIGINAL DISCOVERY OPENED BY 4 OPEN CUTS ABOUT 10 FT. LONG, 4 FT. DEEP AND A 12-FT. SHAFT; OTHER DEPOSIT OPENED BY A SHALLOW OPEN CUT ABOUT 30 FT. LONG . ABOUT 9 TONS OF ORE ON DUMPS IN 1917.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M012262

Bibliographic references

  • Deposit

    DOM BULL. 134, PT. 3, CHAP. 5, P. 230, PL. 13

  • Deposit

    DOM BULL. 76, P. 160

  • Deposit

    SOUTHERN PACIFIC CO., MINERALS FOR INDUSTRY, NORTHERN CALIFORNIA, V. 2, P. 13-15

General comments

Subject category Comment text
Deposit ORIGINAL DISCOVERY OPENED A SERIES OF SMALL BUNCHES OF ORE STRIKING N80E ALONG THE CONTACT BETWEEN SERPENTINE AND AMPHIBOLITE SCHIST. ANOTHER DEPOSIT 50 FT LOWER IN ALTITUDEFROM ORIGINAL DEPOSIT EXPOSED A STRINGER OF LOW GRADE ORE STRIKING N60E AND DIPPING 60SE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JAN-1983 Oster, Karel L. (Albers, John P.) U.S. Geological Survey