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Boundary Cone 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 10109164
MRDS ID M006198
Record type Site
Current site name Boundary Cone Mine
Related records 10260151

Geographic coordinates

Geographic coordinates: -120.69879, 38.26824 (WGS84)
Relative position 3 MI. BY ROAD S OF MOKELUMNE HILL; ON THE DEEP BLUE LEAD CHANNEL. NW1/4

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 19 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

(1) -120.69879, 38.26824
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: THE CHANNEL COURSES SOUTHWEST. THE COMPACTED GRAVEL IS FOUND TO A DEPTH OF 15', APPROXIMATELY 100' WIDE. THE GOLD, ABOUT 900 IN FINENESS, VARIES FROM $1.20-$9.00 A CU. YD. BEDROCK IS CALAVERAS SCHIST. GRAVEL WELL-ROUNDED, SMALL (60% MINUS 1/2-IN.) SEMI-CEMENTED, CONTAINS SOME BLUE CLAY. 386' INCLINED SHAFT; 650' NE DRIFT DRIVEN UPSTREAM FROM NEAR THE END OF A 1700' DRIFT N OF THE SHAFT. 15 MEN EMPLOYED FOR TWO SHIFTS(1935)

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Comments on the production information

  • ACTIVE 1927-28, 1932-37

Reference information

Bibliographic references

  • Deposit

    CALIF. V. 32, NO. 3. P. 328 AND PL. 6

  • Deposit

    CALIF. COUNTY REPT. NO. 2, P. 190 AND PL. C

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 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.