Black Rock Chrome

Past Producer in Placer county in California, United States with commodity Chromium

Geologic information

Identification information

Deposit ID 10139697
MRDS ID W024364
MAS/MILS ID 0060610261
Record type Site
Current site name Black Rock Chrome
Related records 10077014

Geographic coordinates

Point of reference Trench
Geographic coordinates: -120.79492, 39.00299 (WGS84)
Elevation 512
Location accuracy 500(meters)
(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 013 N 011 E 06 NW California


Commodity Importance
Chromium Primary

Nearby scientific data

Trench (1) -120.79492, 39.00299

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Land status

Ownership category Unknown

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0060610261
USGS Mineral Resources Data System MRDS W024364 MAS references MRDS

Bibliographic references

  • Deposit

    DOM SR-67,PL 3;BULL 134,PT 3,CH 5,P 200,228,PL 13

Reporter information

Type Date Name Affiliation Comment
Reporter 04-NOV-1983 Western Field Operations Center (WFOC) U.S. Bureau of Mines