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Lloyd Mine Formerly Watson Brothers Placer Mine

Producer in Calaveras 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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Links to other databases
  10. Bibliographic references
  11. Reporter information

Geologic information

Identification information

Deposit ID 10028667
MRDS ID M005788
Record type Site
Current site name Lloyd Mine Formerly Watson Brothers Placer Mine
Related records 10114635

Geographic coordinates

Point of reference Centroid
Geographic coordinates: -120.73188, 38.21427 (WGS84)
Relative position Original record had no geographic coordinates; these coordinates were derived from the PLSS description provided.

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

San Andreas(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 004N 011E 02,11 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

Centroid (1) -120.73188, 38.21427
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: MOST OF THE GRAVEL IS LOOSE, ALTHOUGH THE ROOF OR TOP GRAVEL IS SLIGHTLY CEMENTED; WIDTH OF PAY GRAVEL IS ABOUT 250' WITH AVERAGE DEPTH OF 6'. THE CHANNEL GRAVEL CONSISTS MAINLY OF WHITE SCHIST, SLATE, AND FLAT QUARTZ STONES.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Comments on the production information

  • ACTIVE 1873, EARLY 1900S, AND DURING 1932-39, IN 1934 12,000 TONS OF GRAVEL YIELDED 802 OZ. AU AND 124 OZ. AG. GOLD IS 875 FINE. 300' SHAFT; DRIFTING; BREASTING. 14 MEN EMPLOYED IN 1936.

Reference information

Bibliographic references

  • Deposit

    CALIF. V. 32, NO. 3, P. 346-7, 360 AND PL. 7

  • Deposit

    CALIF. COUNTY REPT. NO. 2, P. 90, 201 AND PL. C

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-72 Gere, W. 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.