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Francis

Past Producer in San Bernardino county in California, United States with commodities Copper, Lead, Zinc, Silver
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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. Production statistics
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10077220
MRDS ID W024711
Record type Site
Current site name Francis
Related records 10116149

Geographic coordinates

Geographic coordinates: -115.49305, 35.05057 (WGS84)
Elevation 1426
Relative position 4 MILES SE OF AMES

Site location context

Political divisions (FIPS codes)

San Bernardino(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Columbia Mountain(quadrangle 1:24,000 scale)

Ivanpah(quadrangle 1:100,000 scale)

Kingman(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

Mojave National Preserve(National Preserve)

National Preserve NPS(Type of land area)

NPS(Federal land areas administered by NPS)

Geographic areas

Country State County
United States California San Bernardino

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 011N 014E 09 California

Comments on the location information

  • UTM EST. ; INFO FROM LAND.ST :UNDETERMINED

Commodities

Commodity Importance
Copper Primary
Lead Secondary
Zinc Critical Secondary
Silver Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Scheelite Ore
Sphalerite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -115.49305, 35.05057
ListMap

Economic information

Ore body information

  • Strike NE
    Dip 70 NW
    Thickness 9.14M
    Length 762M

Economic information about the deposit and operations

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

Mining district

District name Kelso

Production statistics

  • Year 1918
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^1.7 - 2 % Cu, 7.8 Oz - 10.6 Oz Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Silver Silver 260g/mt
    Major Ore Copper Copper 2wt-pct

Comments on the production information

  • ORE CONTAINS 1 - 2 % PB, 3 - 10 % ZN.

Workings at the site

  • Type of workings Underground
    Length 265.18M
    Overall depth 42.67M

Comments on the workings information

  • TWO SHAFTS TO DEPTHS OF 70 AND 140 FT. WITH CONNECTING DRIFT ON 70 FT. LEVEL 160 FT. IN LENGTH, OTHER DRIFTS ON 140 FT. LEVEL TOTALING 600 FT.

Reference information

Bibliographic references

  • Deposit

    GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 3 & 4 ; DIV. OF MINES, P. 631

  • Deposit

    TUCKER, W. B., AND SAMPSON, R. J., 1943 , MINERAL RESOURCES, SAN BERNARDINO COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 39 , NO. 4 ; DIV. OF MINES, P. 434

  • Deposit

    NW QUARTER ON MID HILLS QUAD;CJMG V 49 NO 1 PL 1

  • Production

    TUCKER, W. B., 1943 , P. 434

General comments

Subject category Comment text
Deposit VEIN IN QUARTZ PORPHYRY INTRUSIVE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1978 Fraticelli, L. A. (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.