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McKnight

Past Producer in Imperial county in California, United States with commodity Fire Clay (Refractory)
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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. Alteration
  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. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10062711
MRDS ID TC36258
Record type Site
Current site name McKnight
Alternate or previous names Lucky Star
Related records 10284943

Geographic coordinates

Geographic coordinates: -114.93524, 33.08785 (WGS84)
Relative position 10 MILES N52E OF GLAMIS, 3.7 MILES S10W OF IMPERIAL GARDENS.

Site location context

Political divisions (FIPS codes)

Imperial(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ninemile Wash(quadrangle 1:24,000 scale)

Trigo Mountains(quadrangle 1:100,000 scale)

Salton Sea(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Salton Sea(hydrologic accounting unit)

Southern Mojave-Salton Sea(hydrologic subregion)

California(hydrologic region)

Federal lands

ST(Federal land areas administered by ST)

Geographic areas

Country State County
United States California Imperial

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 12S 19E 36 NW4 California

Comments on the location information

  • CENTRAL CHOCOLATE MOUNTAINS.

Commodities

Commodity Importance
Fire Clay (Refractory) Primary

Alteration

  • (Local) Advanced Argillic Alteration.

Analytical data

Result ANALYSIS: SIO2, 70.0%
Result AL2O3, 20.50%
Result K2O, 4.00%
Result NA2O, 11.56%
Result TIO2, 6.25%
Result FE2O3, 0.05%
Result LOI, 3.70%.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock

Nearby scientific data

(1) -114.93524, 33.08785
ListMap

Economic information

Ore body information

  • Strike N70E
    Dip 50SE
    Thickness 15.24M
    Length 457.2M

Controls for ore emplacement

  • Fault In Sericite Mica Schist Overlain By Quartzite.

Comments on the geologic information

  • HYDROTHERMALLY ALTERED ZONE ALONG FAULT CONTACT BETWEEN METASEDIMENTARY ROCKS AND RHYOLITE PORPHYRY; ZONE OF ALTERATION 25-30 FT WIDE; ABNORMAL RADIOACTIVITY - 3.4 M.R./HR; AUTUNITE, CARNOTITE, AND TORBERNITE MINERALS WITH QUARTZ, TALC, GYPSUM, CALCITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No

Mining district

District name Chocolate Mountains

Comments on the production information

  • LESS THAN 2000 TONS MINED.

Workings at the site

  • Type of workings Surface
    Overall depth 6.1M
    Overall length 15.24M
    Overall width 15.24M

Comments on the workings information

  • 40 FOOT ADIT AND 100 FOOT OPEN CUT REPORTED.

Reference information

Bibliographic references

  • Deposit

    MORTON, PAUL K., 1977, GEOLOGY AND MINERAL RESOURCES OG IMPERIAL COUNTY CALIFORNIA, CALIFORNIA DIVISION OF MINES AND GEOLOGY, COUNTY REPORT NO. 7.

  • Deposit

    SAMPSON, R.J. AND TUCKER, W.B., 1942, MINERAL RESOURCES OF IMPERIAL COUNTY, CALIFORNIA DIVISION OF MINES BULLETIN, VOL. 38, H2.

  • Other Database

    CIMRI

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1992 Gray, Floyd 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.