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Sunset

Past Producer in Del Norte county in California, United States with commodities Chromium, Platinum, Palladium, Iridium, Ruthenium, Rhodium
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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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Land status
  17. Ownership information
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10029766
MRDS ID M007533
Record type Site
Current site name Sunset
Alternate or previous names Darnell

Geographic coordinates

Geographic coordinates: -123.86893, 41.80121 (WGS84)
Elevation 1196
Location accuracy 100(meters)
Relative position ABOUT 6 MI SOUTHEAST OF GASQUET, Accurate For Pge Sample Site Location, Accurate For Pge Sample Site Location, Accurate For Pge Sample Site Location

Site location context

Political divisions (FIPS codes)

Del Norte(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hurdygurdy Butte(quadrangle 1:24,000 scale)

Happy Camp(quadrangle 1:100,000 scale)

Weed(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Smith(hydrologic unit)

Northern California Coastal(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Federal lands

Six Rivers National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Del Norte

Public Land Survey System information

Meridian Township Range Section Fraction State
Humboldt 016N 003E 05 NW4 OF SW4 California

Comments on the location information

  • UNSURVEYED. IN SIX RIVERS NATIONAL FOREST. ON WEST SIDE OF GORDON MOUNTAIN. UTM IS FOR PGE SAMPLE SITE LOCATION. LAT/LONG GIVEN IS FOR PROSPECT SYMBOL SHOWN ON TOPO MAP ABOUT 0.1 MI NORTH OF ELEVATION MARKER; UTM FOR THIS IS 4627880N, 427920E.

Commodities

Commodity Importance
Chromium Critical Primary
Platinum Critical Tertiary
Palladium Critical Tertiary
Iridium Critical Tertiary
Ruthenium Critical Tertiary
Rhodium Critical Tertiary

Materials information

Materials Type of material
Chromite Ore
Olivine Gangue

Alteration

  • (Local) Ultramafic Rocks Are Serpentinized

Analytical data

Result 1 PGE ANALYSIS: PT=26 PPB
Result PD=<1 PPB
Result IR=490 PPB
Result RU=160 PPB
Result RH=6 PPB.

Mineral occurrence model information

Model code 15
USGS model code 8a
Deposit model name Podiform chromite (minor)
Mark3 model number none

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite
    Rock unit name Josephine Ophiolite
    Rock description Josephine Ophiolite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite

Nearby scientific data

(1) -123.86893, 41.80121
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Strong Shear, Striking N35w And Dipping 75ne, Hosts Ore

Ore body information

  • General form KIDNEY SHAPED PODS
    Thickness 3.66M
    Length 18.29M
    Width 4.57M

Controls for ore emplacement

  • Magmatic Segregation

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner C. H. Bennett
    First year 1942

Comments on the reserve resource information

  • THERE MAY BE 900 TONS OF ORE LEFT

Comments on the workings information

  • OPEN CUT 95 FT LONG AND INCLINED SHAFT 25 FT DOWN DIP

Reference information

Bibliographic references

  • Deposit

    WELLS, F.G., CATER, F.W., JR., AND RYNEARSON, G.A., 1946, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 134, PT. 1, CH. 1, P. 57.

  • Deposit

    CARLSON, C.A., AND OTHERS, 1985, ANALYSES FOR PLATINUM-GROUP ELEMENTS IN SAMPLES FROM PODIFORM CHROMITE DEPOSITS, CALIFORNIA AND OREGON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 85-442, 14 P.

  • Deposit

    O'BRIEN, J.C., 1952, MINES AND MINERAL RESOURCES OF DEL NORTE COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY V. 48, NO. 4, P. 293.

General comments

Subject category Comment text
Deposit SIZE GIVEN IS FOR LARGEST KIDNEY OF ORE
Deposit RECORD W023551 HAS BEEN MERGED AND DELETED.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-72 Gere, W. U.S. Geological Survey
Updater 01-FEB-90 Peterson, Jocelyn A. 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.