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Hard Rock

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. Ownership information
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10028731
MRDS ID M005896
Record type Site
Current site name Hard Rock
Related records 10260171

Geographic coordinates

Geographic coordinates: -120.73545, 38.2538 (WGS84)
Relative position IN CHILI GULCH, 3 1/2 MI. SSW OF MOKELUMNE HILL SE 1/4

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 011E 26 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

(1) -120.73545, 38.2538
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: ON DEEP BLUE LEAD OR CONCENTRATOR CHANNEL. GRAVEL UNCEMENTED, CONTAINS MANY 6" COBBLES. GOLD 80% FLOUR; SMALL NUGGETS OF MELON-SEED SIZE AND CLEAN, FLAT, AND WELL-WORN. RECONDITIONING OLD 40' VERTICAL SHAFT BEGAN OCT.; 90' DRIFT TO NE BY DEC. 1957. OLD SHAFT 300' TO SE WORKED LATE 1940S. GRAVEL WASHED IN SMALL TROMMEL, KNUDSEN BOWL, SLUICES.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Ownership information

  • Type Owner
    Owner Mr. Courtley

Reference information

Bibliographic references

  • Deposit

    CALIF. COUNTY REPT. NO. 2, P. 198-99 AND PL.

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.