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Roach Hill Quartz

Past Producer in Placer county in California, United States with commodity Gold
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10034902
MRDS ID M021952
Record type Site
Current site name Roach Hill Quartz
Related records 10212790

Geographic coordinates

Geographic coordinates: -120.85714, 39.11656 (WGS84)
Elevation 732
Relative position 3/4 MI. NE IOWA HILL NW FLANK ROACH HILL

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Foresthill(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

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 015N 010E 28 California

Comments on the location information

  • UTM EST NE 1/4 SW 1/4

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -120.85714, 39.11656
ListMap

Economic information

Ore body information

  • Strike NNE
    Dip 50 E SE
    Thickness 0.61M

Economic information about the deposit and operations

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

Comments on the workings information

  • INCLINED SHAFT, AT LEAST 2 LEVELS

Reference information

Bibliographic references

  • Deposit

    CHANDRA, D. K., 1961 , GEOLOGY AND MINERAL DEPOSITS OF THE COLFAX AND FORESTHILL QUADRANGLE, CALIFORNIA: SPECIAL REPORT 67 , CALIFORNIA DIVISION OF MINES, P. 47

General comments

Subject category Comment text
Deposit VEIN, 2 FT. THICK

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 Nelson, Scott C. (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.