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  3. Mineral Resource Data System (MRDS)

Sugar Loaf

Past Producer in El Dorado 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. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10006826
MRDS ID C007341
Record type Site
Current site name Sugar Loaf
Related records 10211767

Geographic coordinates

Geographic coordinates: -120.94574, 38.57212 (WGS84)
Relative position 1 3/4 MI. NE OF EL DORADO

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Latrobe(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 008N 009E 01,12 California

Comments on the location information

  • UTM ACC. SW 1/4 01 , NW 1/4 12

Commodities

Commodity Importance
Gold Primary
Lead Secondary

Comments on the commodity information

  • HIGH GRADE ORE FOUND INTERMITTENTLY BELOW 100 FT. LEVEL

Materials information

Materials Type of material
Galena Ore
Gold Ore
Pyrite Ore
Quartz Gangue
Talc Gangue

Host and associated rocks

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

Nearby scientific data

(1) -120.94574, 38.57212
ListMap

Economic information

Ore body information

  • Strike N
    Dip 75W
    Depth to top 0M

Comments on the geologic information

  • QTZ. VEIN IN W. BELT OF MOTHER LODE, 5 FT. THICK, AVE. SLATE FOOTWALL, TALCOSE SERPENTINE HANGING WALL. DIKES OF MED. GRAINED DIORITE ASSOC. W SLATE.

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 IN EARLY DAYS OF GOLD RUSH. OPERATED INTERMITTENTLY SINCE 1954 BY THE BUTLER MINING AND DEVELOPMENT COMPANY.

Workings at the site

  • Type of workings Surface/Underground
    Area 3.642HA

Comments on the workings information

  • OPEN CUTS. INCLINED SHAFT 175 FT. W. LEVELS AT 100 , 130 , 175 FT.

Reference information

Bibliographic references

  • Deposit

    CLARK, W. B., AND CARLSON, D. W., 1956 , MINES AND MINERAL RESOURCES OF EL DORADO CO., CALIF.: CALIF. JOUR. OF MINES AND GEOL., VOL. 52 , NO. 4 , PG. 426 , 534 , PL. 10 .

  • Deposit

    LOGAN, C. A., 1938 , MIN. RESOURCES OF EL DORADO CO.: CALIF. JOUR. OF MINES AND GEOL., VOL. 34 , NO. 3 , PL. 2 .

  • Production

    CLARK AND CARLSON, 1956

General comments

Subject category Comment text
Deposit VEIN, POCKET

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 Hayden, F. (Albers, J.) U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 27-APR-1995 Mosier, Dan U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.