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  3. Mineral Resource Data System (MRDS)

Monarch Sugar Loaf

Occurrence in El Dorado 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. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10029889
MRDS ID M007726
Record type Site
Current site name Monarch Sugar Loaf

Geographic coordinates

Geographic coordinates: -120.86158, 38.60379 (WGS84)
Relative position SE1/4 NW1/4, NE1/4 SW1/4. LOCATED 3 MILES NW OF NASHVILLE.

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Fiddletown(quadrangle 1:24,000 scale)

Placerville(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Cosumnes(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California El Dorado

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 009N 010E 27 California

Commodities

Commodity Importance
Gold Primary

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner George Ross

Comments on the production information

  • ORIGINALLY WORKED IN 1850'S. ACTIVE 1870-1907. DURING 1930'S SOME PROSPECTING DONE. IN 1953-54 SOME OF WORKINGS WERE REHABILITATED. EARLY IN 1955 PRESENT LESSEE LEASED THE MINE AND HAS BEEN MINING SOME HIGH GRADE ORE FROM SMALL POCKETS IN THE VEIN. MUCH OF RECENT OUTPUT HAS BEEN SPECIMEN MATERIAL.

Comments on the workings information

  • OPEN CUTS AND SHALLOW SHAFTS FOR ABOUT 2,000 FT. ALONG THE STRIKE. PRESENT WORK IN 70-FT. CROSSCUT ADIT AND SEVERAL NEARBY OPEN CUTS IN CENTRAL PORTION OF DEPOSIT.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 52, NO. 4, PP. 419-20, 518, AND PL. 10; V. 34, NO. 3, PL. II

General comments

Subject category Comment text
Deposit NEAR THE SURFACE THE GOLD IS CHIEFLY IN SMALL BUT RICH ORE SHOOTS WITH LITTLE OR NO SULFIDES. SULFIDES INCREASED AT DEPTH. CHALCOPYRITE AND SPHALERITE MOST COMMON; PYRITE AND GALENA PRESENT IN SMALLER AMOUNTS. CLAIM CONTAINS 18.42 ACRES.

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.