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Branch Mine

Past Producer in San Bernardino county in California, United States with commodities Gold, Silver, Lead, Copper
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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. Mining district
  13. Land status
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10035601
MRDS ID M023451
Record type Site
Current site name Branch Mine
Related records 10164327

Geographic coordinates

Geographic coordinates: -117.27171, 34.65112 (WGS84)
Elevation 1189
Relative position W. SUMMIT OF SILVER MTN.

Site location context

Political divisions (FIPS codes)

San Bernardino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Helendale(quadrangle 1:24,000 scale)

Victorville(quadrangle 1:100,000 scale)

San Bernardino(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Mojave(hydrologic unit)

Northern Mojave(hydrologic accounting unit)

Northern Mojave-Mono Lake(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 San Bernardino

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 007N 004W 35 California

Comments on the location information

  • UTM ACC S 1/2 NW 1/4 AND N 1/2 SW 1/4

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Tertiary
Copper Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock
    Stratigraphic age (youngest) Late Triassic

Nearby scientific data

(1) -117.27171, 34.65112
ListMap

Economic information

Ore body information

  • Strike N10W
    Dip 90
    Thickness 0.3M

Comments on the geologic information

  • LOCALLY, THE WALL ROCKS CONTAIN PYRITE AND THE MINOR ORE MINERALS

Economic information about the deposit and operations

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

Mining district

District name Oro Grande

Land status

Ownership category Private

Production statistics

  • Year 1889
    Material AU AG
    Accuracy Accurate
    Description Ap_Grade: ^Assayed At 2.89 Oz. Au And 21.5 Oz. Ag/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Silver Silver 607g/mt
    Major Gold Gold 82g/mt

Comments on the production information

  • ACTIVE 1880'S, 1896, 1909. NO OTHER PRODUCTION RECORDS FOUND. TOTAL PRODUCTION MAY HAVE BEEN BETWEEN $19000 AND $20,000

Comments on the workings information

  • 300 FT. ADIT W/2 130 FT. RAISES TO SURFACE AND SEVERAL WINZES BELOW 200 FT.

Reference information

Bibliographic references

  • Deposit

    SOUTHERN PACIFIC COMPANY, 1964, MINERALS FOR INDUSTRY, SOUTHERN CALIFORNIA, V. 3, P. 49

  • Deposit

    WRIGHT, L.A. AND OTHERS, 1953, MINES AND MINERAL DEPOSITS OF SAN BERNARDINO COUNTY, CALIFORNIA TABULATED LIST: CALIF. JOUR. MINES AND GEOLOGY, V. 49, NOS. 1 & 2, P. 27, PL. 7.

  • Deposit

    BOWEN, O.E., 1954, GEOLOGY & MINERAL DEPOSITS OF THE BARSTOW QUADRANGLE, SAN BERNARDINO COUNTY, CALIF.: CALIF. DIV. MINES & GEOLOGY, BULL. 165, P. 130

  • Production

    SOUTHERN PACIFIC CO. (1964) BOWEN (1954)

General comments

Subject category Comment text
Deposit VEIN 1 FT IN THICKNESS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-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.

External references

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.