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Daulton Group

Past Producer in Madera county in California, United States with commodities Copper, Silver, Gold, Cobalt
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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. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10067586
MRDS ID W000371
Record type Site
Current site name Daulton Group
Alternate or previous names Jessie Belle, Jesbel
Related records 10285518

Geographic coordinates

Geographic coordinates: -119.96042, 37.10661 (WGS84)
Elevation 183
Relative position 15 MILES NE OF MADERA

Site location context

Political divisions (FIPS codes)

Madera(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Daulton(quadrangle 1:24,000 scale)

Shaver Lake(quadrangle 1:100,000 scale)

Mariposa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fresno River(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Madera

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 009S;009S 018E;019E 13;18,19 California

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary
Cobalt Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Pyrrhotite Ore
Sphalerite Ore

Analytical data

Result BRADFORD SHAFT
Result REPORTED TO CARRY 3.75 % CU AND 7 % ZN, ACCORDING TO OWNER. IT AVERAGES 6 % CU, AND 10 % ZN.

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist
    Rock unit name Mariposa Formation
    Rock description Mariposa Formation
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic

Economic information

Ore body information

  • Dip 70E
    Thickness 30.48M

Controls for ore emplacement

  • Shear Zone

Comments on the geologic information

  • MARIPOSA CLAY SLATE HOST ORE. ; GEOL.DESC: MINE LOCATED ON A NEARLY NORTH - STRIKING RIDGE, RIDGE IS FORMED OF MICA SCHIST DERIVED FROM MARIPOSA CLAY SLATE. MICA SCHIST NOTABLE FOR LARGE AMOUNT OF ANDALUSITE IN FORM OF COARSE CHIASTOLITE CRYSTALS. SCHIST OUTCROP STRIKES NEARLY NORTH FOR 1,000 FT. FROM N. SHAFT, THEN STRIKES N 10 W. DIP OF SCHISTOSITY IS 70 E.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1865
Year of first production 1942
Year of last production 1945
Production years 1942-1944, 1945

Mining district

District name Daulton

Comments on the production information

  • MINE WORKED IRREGULARLY SINCE 1900 . RECENT YEARS PRODUCTION HAS BEEN IN "CEMENT" COPPER. NO ZINC PRODUCTION REPORTED AND ONLY 222 LBS. PB. KNOWN TO HAVE BEEN RECOVERED. ORE SHIPPED BETWEEN 1915 - 1948 , AVERAGED 16.68 % CU, 17.1 OZ. AG, MINOR PB AND AU, AND UNKNOWN PERCENTAGE OF ZN. SINCE 1915 PRODUCTION IS LESS THAN 300,000 LBS. OF COPPER, PRIOR PRODUCTION NOT KNOWN.

Comments on the reserve resource information

  • OWNER REPORTS; ORE, 10 FT. WIDE AT BOTTOM OF BRADFORD NORTH SHAFT, ORE SHOOT IS POSSIBLY 150 FT. LONG EXTENDING SOUTHWARD.

Comments on the workings information

  • 1,000 FT OF SURFACE WORKINGS; SHALLOW PITS AND NUMEROUS SHAFTS, ALONG WITH WINZES, STOPES AND RAISES.

Reference information

Bibliographic references

  • Deposit

    GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIF.; CA. JOUR. MINES AND GEOLOGY, VOL. 53 , NOS. 3 & 4 , P. 541 - 542 .

  • Deposit

    LOGAN, C. A., 1950 , MINES AND MINERALS OF MADERA COUNTY, CA.; CA. JOUR. MINES AND GEOLOGY, VOL. 46 , NO. 4 , P. 451 - 452 .

  • Production

    GOODWIN, J. G., 1957

  • Reserve-Resource

    UNPUBLISHED CO REPORT

General comments

Subject category Comment text
Deposit Discovery Year: 1860S
Deposit SEVERAL SHOOTS OF ORE HAVING AN APPROXIMATE PARALLELISM. ORE NORMALLY IS AN IRON - COPPER SULFIDE.
Deposit 60 ACRES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1972 Coury, Anny B. U.S. Geological Survey
Updater 01-OCT-1978 Fraticelli, L. A. (Albers, J.) 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.