Chrome Ridge

Past Producer in Josephine county in Oregon, United States with commodities Chromium, Platinum, Rhodium, Palladium
Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Alteration
  7. Mineral occurrence model information
  8. Nearby scientific data
  9. Geologic structures
  10. Controls for ore emplacement
  11. Economic information about the deposit and operations
  12. Ownership information
  13. Bibliographic references

Geologic information

Identification information

Deposit ID 60001006
MRDS ID M061750
Record type District
Current site name Chrome Ridge
Alternate or previous names Sordy Group

Geographic coordinates

Geographic coordinates: -123.72286, 42.43402 (WGS84)
Relative position IN SISKIYOU NATIONAL FOREST. 4 MI NORTH OF CENTRAL ILLINOIS RIVER AREA. UTM FOR PGE SAMPLE SITE LOCATION PLOTS IN CALIFORNIA. IDENTITY OF THIS DEPOSIT IS IN QUESTION. ORIGINAL ENTRY SUGGESTED THIS MAY BE PART OF SORDY GROUP. PRODUCTION FIGURES IN CARLSON AND OTHERS (1985) SUGGEST IT MAY BE SAD SACK (BLACK PRINCESS), MINE WHICH IS NOT PART OF SORDY GROUP.

Site location context

Political divisions (FIPS codes)

Josephine(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Chrome Ridge(quadrangle 1:24,000 scale)

Grants Pass(quadrangle 1:100,000 scale)

Medford(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Illinois(hydrologic unit)

Southern Oregon Coastal(hydrologic accounting unit)

Oregon-Washington Coastal(hydrologic subregion)

Pacific Northwest(hydrologic region)

Federal lands

Rogue River-Siskiyou National Forests(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Oregon Josephine

Commodities

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

Alteration

  • (Local) SERPENTINIZATION

Mineral occurrence model information

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

Nearby scientific data

(1) -123.72286, 42.43402

Economic information

Geologic structures

Type of structure Local
Structure description 2 MAIN SETS OF FAULTS, ALSO CONSIDERABLE FOLDING

Controls for ore emplacement

  • Magmatic segregation

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic

Ownership information

  • Type Operator
    Owner TULARE BROTHERS
    Year 1954

Reference information

Bibliographic references

  • Deposit

    THAYER, T.P., 1974, U.S. GEOLOGICAL SURVEY, UNPUB. DATA.

  • 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

    WELLS, F.G., PAGE, L.R., AND JAMES, H.L., 1941, CHROMITE DEPOSITS IN THE SOURDOUGH AREA, CURRY COUNTY, AND THE BRIGGS CREEK AREA, JOSEPHINE COUNTY, OREGON: U.S. GEOLOGICAL SURVEY BULLETIN 922-P, P. 477-496.

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.