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Shady Cove

Producer in Josephine county in Oregon, 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. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10043070
MRDS ID M061553
Record type Site
Current site name Shady Cove
Alternate or previous names Part of Sordy Group
Related records 10249540

Geographic coordinates

Geographic coordinates: -123.72588, 42.45788 (WGS84)
Elevation 1231
Relative position 2 MI WEST OF BRIGGS VALLEY

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

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 036S 009W 11 SW4 OF NE4 Oregon

Comments on the location information

  • IN A HOLLOW ON THE EAST SIDE OF CHROME RIDGE. UTM GIVEN IS FOR PGE SAMPLE SITE LCOATION. LAT/LONG GIVEN ARE FOR MINE SYMBOL NEAR CENTER NE/4 SEC. 11; UTM FOR THIS IS 4700670N, 440400E.

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
Talc Gangue

Analytical data

Result 4 ASSAYS: MASSIVE ORE 45.31% CR2O3, 14.52% FE, AND 45.73% CR2O3
Result ORE FROM ASHLAND MILL 39.40% CR2O3, 12.83% FE, 11.64% SIO2
Result CONCENTRATES 52.60% CR2O3, 14.28% FE. 3 PGE ANALYSES: PT=N(10)-20
Result PD=<4-3 PPB
Result IR=30 PPB (2 NOT ANALYZED)
Result RU=<100 PPB (2 NOT ANALYZED)
Result RH=N(5)-19.

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 Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite
    Rock unit name Pearsoll Peak Ophiolite
    Rock description Pearsoll Peak Ophiolite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic

Economic information

Ore body information

  • General form LENS, LINEAR ZONES, BANDED, DISSEMINATED
    Width 1.37M

Controls for ore emplacement

  • Magmatic Segregation

Comments on the geologic information

  • PERIDOTITE IS BLOCKY AND HAS VARIED AMOUNTS OF SERPENTINE

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Chrome Ridge District

Land status

Ownership category National Forest
Area name Siskiyou National Forest

Ownership information

  • Type Operator
    Owner Tulare, George
    First year 1958

Production statistics

  • Year 1953
    Period 1951-1953
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^51% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 51wt-pct
  • Year 1958
    Period 1951-1958
    Material TOTAL
    Accuracy Estimate
    Description Cp_Grade: ^50.34% Cr2o3 (Weighted Average Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 50wt-pct
  • Year 1958
    Period 1956-1958
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^50% Cr2o3, 2.8 Cr:Fe3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 50wt-pct

Comments on the production information

  • ORE WAS FRIABLE (49% CR2O3, 12% FE, 5% SIO2), SOME HAD TO BE CONCENTRATED (52.7% CR203, 13.1% FE, 2.45% SIO2)

Workings at the site

  • Type of workings Surface/Underground
    Overall length 16.76M
    Overall width 10.67M

Comments on the workings information

  • 40 FT INCLINED SHAFT IN LARGE OPEN CUT AREA. OTHER CUTS AND SHAFTS

Reference information

Bibliographic references

  • Deposit

    RAMP, LEN, 1961, CHROMITE IN SOUTHWESTERN OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 52, P. 77-79.

  • Deposit

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

  • Deposit

    RAMP, LEN, AND PETERSON, N.V., 1979, GEOLOGY AND MINERAL RESOURCES OF JOSEPHINE COUNTY, OREGON: OREGON DEPARMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 100, TABLE 1.

  • Deposit

    PAGE, N.J, JOHNSON, M.G., HAFFTY, JOSEPH, AND RAMP, LEN, 1975, OCCURRENCE OF PLATINUM GROUP METALS IN ULTRAMAFIC ROCKS OF THE MEDFORD-COOS BAY 2 DEGREE QUANDRANGLE, SOUTHWESTERN OREGON: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-694, SCALE 1:250,000.

  • Deposit

    OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES, 1952, OREGON METAL MINES HANDBOOK, SOUTHWESTERN OREGON--JOSEPHINE COUNTY (2D ED.): OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 14-C, V. 2, SEC. 1, P. 145-146.

  • 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.

General comments

Subject category Comment text
Deposit OFFSET BY FAULTS, COMPLEX STRUCTURE OF FOLDS
Deposit SEE ALSO: MRDS M060523.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1976 Johnson, Maureen G. U.S. Geological Survey
Updater 01-APR-1981 Ferns, Mark L. (Brooks, Howard C.) Oregon Department of Geology and Mineral Industries
Updater 01-MAY-1989 Peterson, Jocelyn A. U.S. Geological Survey

Beyond USGS

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

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