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  3. Mineral Resource Data System (MRDS)

Tumco Mine

Past Producer in Imperial 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. Host and associated rocks
  8. Nearby scientific data
  9. Ore body information
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10065058
MRDS ID TC40051
Record type Site
Current site name Tumco Mine

Geographic coordinates

Geographic coordinates: -114.49801, 32.85619 (WGS84)
Relative position 4.5 MILE NE OF OGILBY SIDING.

Site location context

Political divisions (FIPS codes)

Imperial(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Laguna Dam(quadrangle 1:24,000 scale)

Yuma(quadrangle 1:100,000 scale)

El Centro(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Colorado(hydrologic unit)

Lower Colorado(hydrologic accounting unit)

Lower Colorado(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management AZ)

Bureau of Land Management AZ BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Imperial

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 015S 020E 1;12 S2 (01); N2 (12) California

Comments on the location information

  • NW CARGO MUCHACHO MOUNTAINS.

Commodities

Commodity Importance
Gold Primary

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Arkose
    Rock unit name Tumco Formation
    Rock description Tumco Formation
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -114.49801, 32.85619
ListMap

Economic information

Ore body information

  • General form LENS, TABULAR
    Strike N40-80E
    Dip 25-50SE
    Width 4.57M

Controls for ore emplacement

  • Fault

Comments on the geologic information

  • ARKOSITE IS GRAY, FINE-GRAINED INDURATED MATERIAL COMPOSED OF QUARTZ, FELDSPAR, HORNBLENDE, AND BIOTITE. INTRUDED BY NARROW PEGMATITE DIKES OF VARYING FORM AND ORIENTATION.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1884

Mining district

District name Cargo Muchacho Mountains

Comments on the production information

  • $2,863,000 IN AU, 45% OF COUNTY TOTAL. PRESENT ACTIVITY UNKNOWN.

Comments on the workings information

  • 1200 FT INCLINED SHAFT AT GOLDEN CROWN, 1100 FT SHAFTS AT GOLDEN CROSS AND GOLDEN QUEEN WORKINGS. TOTAL HORIZONTAL WORKINGS ARE 8 MILES.

Reference information

Bibliographic references

  • Deposit

    SAMPSON, R.J., AND TUCKER, W.B., 1942, MINERAL RESOURCES OF IMPERIAL COUNTY: CALIFORNIA DIVISION OF MINES AND GEOLOGY, VOL. 38, NO. 2, P. 191.

  • Deposit

    MORTON, P.K., 1977, GEOLOGY AND MINERAL RESOURCES OF IMPERIAL COUNTY, CALIFORNIA: CALIFORNIA DIVISION MINES AND GEOLOGY, COUNTY REPORT NO. 7, P. 60-1.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit MINERALIZED ZONES IN PRECAMBRIAN TUMCO ARKOSITE. FOOTWALL REGULAR PLANE WHILE HANGING WALL IRREGULAR. MINERAL ZONES ARE IDENTICAL TO COUNTRY ROCK ALTHOUGH FELDSPARS ARE KAOLINIZED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1993 Unkefer, Jason 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.