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Irma and Weldon

Occurrence in Amador 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. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Ownership information
  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 10028158
MRDS ID M004995
Record type Site
Current site name Irma and Weldon
Related records 10211599

Geographic coordinates

Geographic coordinates: -120.86408, 38.44684 (WGS84)
Relative position AT PIONEER, 5 MILES E OF VOLCANO

Site location context

Political divisions (FIPS codes)

Amador(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Amador City(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Mokelumne(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Amador

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 007N 010E 22 California

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • QUARTZ VEIN CONTAINS 10 % SULFIDES

Materials information

Materials Type of material
Gold Ore
Pyrrhotite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -120.86408, 38.44684
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Ownership information

  • Type Operator
    Owner B. I. Hoxie (Estate)

Workings at the site

  • Type of workings Underground
    Overall depth 58.83M

Comments on the workings information

  • SHAFT 193 FT.

Reference information

Bibliographic references

  • Deposit

    LOGAN, C.A., 1927 , AMADOR COUNTY: CMB REPT. 23 , P. 191

  • Deposit

    TUCKER, W.B., 1914 , AMADOR COUNTY: CMB REPT. 14 , P 20

General comments

Subject category Comment text
Deposit GEOLOGIC DESCRIPTION BRIEF

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. U.S. Geological Survey
Updater 01-APR-1978 Tatkin, T.; 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.