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Lamphear and Moser

Past Producer in Calaveras county in California, United States with commodities Gold, Lead
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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 10028927
MRDS ID M006190
Record type Site
Current site name Lamphear and Moser
Related records 10114692

Geographic coordinates

Geographic coordinates: -120.69434, 38.2863 (WGS84)
Elevation 488
Relative position 1 MI DUE S. MOKELUMNE HILL ON RIDGE

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mokelumne Hill(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Calaveras(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 005N 012E 18 California

Commodities

Commodity Importance
Gold Primary
Lead Tertiary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Quartz Gangue

Analytical data

Result ASSAYED $4.80/TON ON NORTH SIDE OF VEIN, BUT WAS POOR ON SOUTH SIDE. ORE CARRIED 3.5% CONCENTRATES, OF WHICH 1% WAS GALENA. CONCENTRATES ASSAYED APPROX. $65/TON.

Host and associated rocks

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

Nearby scientific data

(1) -120.69434, 38.2863
ListMap

Economic information

Ore body information

  • General form VEIN, SWELLS & PINCHES
    Strike NE
    Dip 45 SE
    Thickness 3.35M

Economic information about the deposit and operations

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

Comments on the production information

  • FIRST WORKED ABOUT 1866 , ACTIVE 1870 - 1900 , 1922 - 1930 INTERMITTENTLY

Comments on the workings information

  • DEVELOPED BY 300 FT INCLINED FOOTWALL SHAFT WITH LEVELS AT 115 , 180 AND 280 FT, STOPING MAINLY ABOVE 180 FT LEVELCROSSCUTS AND DRIFTS.

Reference information

Bibliographic references

  • Deposit

    CLARK, W.B., LYDON, P.A., 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIF.; COUNTY REPORT 2 ; CALIF. DIV. OF MINES AND GEOLOGY, P 60 , 161 , 169 AND PL B

  • Deposit

    LOGAN, C.A., 1925 , SACRAMENTO FIELD DIVISION - CALAVERAS CO.: CALIF. MIN. BUREAU. REPT. 21ST STATE MINERALOGIST, P. 155

  • Deposit

    LOGAN, C.A., FRANKE, H., 1936 , MINES AND MINERAL RESOURCES OF CALAVERAS CO.: CDM CALIF. JOUR. MINES & GEOL., VOL. 32 , NO. 3 , P. 267 & 310

  • Production

    CLARK ( 1962 )

General comments

Subject category Comment text
Deposit VEIN, SLATE HANGING WALL, AMPHIBOLITE SCHIST FOOTWALL ON LAMPHEAR VEIN, VEIN 6 - 11 FT THICK

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Mateik, R.; 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.