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High Commission Mine

Past Producer in Sierra 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. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10034782
MRDS ID M021691
Record type Site
Current site name High Commission Mine
Related records 10262313

Geographic coordinates

Geographic coordinates: -120.80436, 39.56432 (WGS84)
Elevation 1524
Relative position 1 MI. E OF DOWNIEVILLE

Site location context

Political divisions (FIPS codes)

Sierra(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Downieville(quadrangle 1:24,000 scale)

Portola(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Yuba(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 Sierra

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 020N 010E 25,36 California

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • HIGH GRADE BUNCH OF ARSENOPYRITE

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite

Nearby scientific data

(1) -120.80436, 39.56432
ListMap

Economic information

Ore body information

  • Strike N
    Dip VERT

Comments on the geologic information

  • 2 PARALLEL VEINS, HIGH COMMISSION 4 1/2 FT. THICK, DIPS NEARLY VERT, SURFACE OUTCROP FOR 3 MILES, SLATE FOOTWALL, PORPHYRY HANGING WALL. BIG LEDGE, 11 FT. THICK OF QTZ., SLATE & DECOMPOSED PORPHYRY CARRYING FREE GOLD & NO SULFIDES. VEINS ARE PARALLEL TO MEXICAN VEIN 300 FT. E.

Economic information about the deposit and operations

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

Comments on the production information

  • INTERMITENT PRODUCTION 1905 - 1914 .

Workings at the site

  • Type of workings Surface/Underground
    Area 20.235HA
    Overall depth 76.2M
    Overall length 1097.28M

Comments on the workings information

  • ADITS, CROSS CUT TUNNELS, 300 FT. TOTAL.

Reference information

Bibliographic references

  • Deposit

    AVERILL, C. V., 1942 , MINES AND MINERAL RESOURCES OF SIERRA CO.: CDM CALIF. JOUR. MINES AND GEOL., VOL. 38 , NO. 1 , P. 57 .

  • Deposit

    LOGAN, C. A., 1929 , SIERRA CO.: CDMM 25TH REPORT STATE MINERALOGIST, APRIL, P. 178 .

  • Deposit

    MACBOYLE, E., 1920 , MINES AND MINERAL RESOURCES SIERRA CO.: CSMB 16TH REPORT STATE MINERALOGIST, DEC. 1918 , P. 91 & 92 .

  • Production

    MACBOYLE, 1920

General comments

Subject category Comment text
Deposit VEINS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1979 Hayden, F. (Albers, J.) 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.