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A Mine

Producer in Douglas 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. Links to other databases
  15. Bibliographic references
  16. Reporter information

Geologic information

Identification information

Deposit ID 10036414
MRDS ID M025205
Record type Site
Current site name A Mine
Alternate or previous names Rice Chrome
Related records 10200580

Geographic coordinates

Geographic coordinates: -123.30449, 43.0476 (WGS84)
Elevation 305

Site location context

Political divisions (FIPS codes)

Douglas(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Myrtle Creek(quadrangle 1:24,000 scale)

Roseburg(quadrangle 1:100,000 scale)

Roseburg(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Umpqua(hydrologic unit)

Southern Oregon Coastal(hydrologic accounting unit)

Oregon-Washington Coastal(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Oregon Douglas

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 029S 005W 20 NE Oregon

Comments on the location information

  • NE 1/4 SEC 20, NW 1/4 SEC 21

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Host and associated rocks

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

Nearby scientific data

(1) -123.30449, 43.0476
ListMap

Economic information

Ore body information

  • General form PODIFORM
    Strike N75W
    Dip 25-30N
    Thickness 1.83M
    Width 2.44M

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Riddle

Land status

Ownership category Private

Comments on the production information

  • LESS THAN 50 TONS TOTAL PRODUCTION, MOSTLY IN 1941 AND X 1952

Comments on the workings information

  • SEVERAL HUNDRED FEET OF SHALLOW TRENCHING AND FIVE OPEN CUTS UP TO 15 FT DEEP LESS THAN 50 TONS TOTAL PRODUCTION, MOSTLY IN 1941 AND X 1952

Reference information

Bibliographic references

  • Deposit

    RAMP, L., 1972, GEOLOGY AND MINERAL RESOURCES OF DOUGLAS COUNTY, OREGON; ODGMI BULL. 75, P. 17

  • Deposit

    RAMP, L., 1961, CHROMITE IN SOUTHWESTERN OREGON; ODGMI BULL. 52, P. 119

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1981 Ferns, Mark L. (Brooks, Howard C.) Oregon Department of Geology and Mineral Industries
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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