Twin Shafts

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

Geologic information

Identification information

Deposit ID 10231982
MRDS ID W024444
MAS/MILS ID 0060610663
Record type Site
Current site name Twin Shafts
Related records 10110869

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -120.75993, 39.10879 (WGS84)
Elevation 1195
Location accuracy 100(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 015 N 011 E 29 SWSE California


Commodity Importance
Chromium Primary

Nearby scientific data

Main Entrance (1) -120.75993, 39.10879

Economic information

Economic information about the deposit and operations

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

Land status

Ownership category Private

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0060610663
USGS Mineral Resources Data System MRDS W024444 MAS references MRDS

Bibliographic references

  • Deposit

    DOM SR 67 PL 1 3 BULL 134 PT 3 CH 5 P 214 PL 14 CJMG V 51 NO

  • Deposit

    377 MIN YB V 3 1952 1953 P 217

Reporter information

Type Date Name Affiliation Comment
Reporter 04-NOV-83 Western Field Operations Center (WFOC) U.S. Bureau of Mines