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

Comeback Occurrence

Occurrence in Placer county in California, United States with commodity Chromium
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Land status
  12. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. Reporter information

Geologic information

Identification information

Deposit ID 10043553
MRDS ID M100336
Record type Site
Current site name Comeback Occurrence

Geographic coordinates

Geographic coordinates: -120.7702, 39.12767 (WGS84)
Location accuracy 1000(meters)
Relative position Assumed Spot Center E2 Of Nw Of Sw, 20

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Dutch Flat(quadrangle 1:24,000 scale)

Truckee(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Fork American(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Tahoe National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 015N 011E 20 E2 OF NW OF SW California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -120.7702, 39.12767
ListMap

Economic information

Comments on the geologic information

  • DEPOSIT OCCURS IN THE EASTERNMOST OF 3 SUBPARALLEL BELTS OF ULTRAMAFIC ROCKS THAT TREND NORTHWARD ACROSS PLACER COUNTY.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Forest Hill Divide

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Anderson, J. G.
    First year 1949

Reference information

Bibliographic references

  • Deposit

    RYNEARSON, G.A., 1953, CDMG BULL 134, PT. 3, CHAPT. 5, P. 215, 30

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-83 Oster, Karel L. (Albers, John P.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.