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Chollard Mine

Producer in Josephine county in Oregon, United States with commodity Chromium
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10042718
MRDS ID M060643
Record type Site
Current site name Chollard Mine
Alternate or previous names Golconda
Related records 10281071

Geographic coordinates

Geographic coordinates: -123.55365, 42.08621 (WGS84)
Elevation 663

Site location context

Political divisions (FIPS codes)

Josephine(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Takilma(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

Bureau of Land Management(Bureau of Land Management OR)

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

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Oregon Josephine

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 040S 007W 17 Oregon

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Analytical data

Result 5 ASSAYS - LOW GRADE DISSEMINATED ORE 24.7% & 27.0% CR2O3
Result MILL CONCENTRATES 47.8% CR2O3, 15.4% FE
Result MASSIVE
Result PT GROUP LOOKED FOR, NOT FOUND

Host and associated rocks

  • Host or associated Associated
    Rock type Metamorphic Rock > Metavolcanic Rock
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Harzburgite

Nearby scientific data

(1) -123.55365, 42.08621
ListMap

Economic information

Ore body information

  • General form LENS, NARROW SEAMS
    Strike N 30 W
    Dip 20-70 SW

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Waldo

Land status

Ownership category BLM Administrative Area
Area name Siskiyou National Forest

Production statistics

  • Year 1916
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^45. % Cr2o3 (Conc)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Cr2O3 Chromium Chromium 45wt-pct
  • Year 1917
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^45. % Cr2o3 (Conc)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Cr2O3 Chromium Chromium 45wt-pct
  • Year 1943
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^39. % Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Cr2O3 Chromium Chromium 39wt-pct
  • Year 1957
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^46. % Cr2o3 (Conc.)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Cr2O3 Chromium Chromium 46wt-pct

Comments on the production information

  • MOST ORE PRESUMABLY 10 TO 35% CR2O3; LESS THAN 50,000 TONS AVAILABLE IN 1940; NOT MUCH MINING SINCE; PROBLEMS WITH PRODUCTION STATISTICS 1952-1954 SEE GONCOLDA

Comments on the workings information

  • MOST ORE PRESUMABLY 10 TO 35% CR2O3; LESS THAN 50,000 TONS AVAILABLE IN 1940; NOT MUCH MINING SINCE; PROBLEMS WITH PRODUCTION STATISTICS 1952-1954 SEE GONCOLDA

Reference information

Bibliographic references

  • Deposit

    RAMP, LEN, 1961, CHROMITE IN SOUTHWESTERN OREGON: OREGON DEPT. GEOLOGY AND MINERAL IND. BULL. 52, 169 P.

  • Deposit

    THAYER, T. P., 1974, UNPUBL. DATA

  • Deposit

    RAMP, L. AND PETERSON, N.V., 1979, GEOLOGY AND MINERAL RESOURCES OF JOSEPHINE COUNTY, OREGON; ODGMI BULL. 100, 45P

General comments

Subject category Comment text
Deposit RECORD NUMBERS (M013293) AND (W017047) HAVE BEEN MERGED WITH THIS RECORD AND DELETED FROM THE OREGON FILE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1981 Unknown U.S. Geological Survey
Updater 01-FEB-1981 Ferns, Mark L. (Brooks, Howard C.) U.S. Geological Survey
Updater 01-AUG-1993 Gray, Jerry J. Oregon Department of Geology and Mineral Industries

Beyond USGS

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

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