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Oregon Chrome Mine

Past Producer in Josephine county in Oregon, United States with commodities Chromium, Iron, 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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10128659
MRDS ID MO61791
MAS/MILS ID 0410330015
Record type Site
Current site name Oregon Chrome Mine
Alternate or previous names Black Beauty, Robertson Mine, Illinois River Mine

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -123.77176, 42.36092 (WGS84)
Elevation 378
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Josephine(county)

Oregon(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pearsoll Peak(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 037 S 009 W 21 NWNENW Oregon

Commodities

Commodity Importance
Chromium Critical Primary
Iron Tertiary
Rhodium Critical Tertiary

Materials information

Materials Type of material
Chromite Unknown
Enstatite Unknown
Olivine Unknown
Serpentine Unknown
Spinel Unknown

Nearby scientific data

Main Entrance (1) Granite and diorite
ListMap

Economic information

Ore body information

  • Strike N30E
    Dip 30E
    Thickness 9M
    Length 244M
    Width 213M
    Area 2.32HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 OTHER
    Shape of Orebody #1 MASSIVE
    Shape of Orebody #2 TABULAR
    Shape of Orebody #3 LENTICULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control BEDDING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 OTHER
    Strike And Dip N30E:30E
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 2.32
    Date of Last Modification 830316

Comments on the geologic information

  • CHROME TO IRON RATIO EQUALS Q TO 2.7.
  • TYPE OF ORE BODY IS PODIFORM. OREBODIES APPROXIMATELY 4.6M MAXIMUM IN THICKNESS, 45.7M IN LENGTH, AND 15M IN WIDTH. OREBODIES ARE LENS-SHAPED AND ARE ELLIPSOIDAL IN PLAN VIEW. ALTERATION TYPE IS SERPENTINIZATION.

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Significant No
Year of first production 1917

Mining district

District name Illinois-Kentucky Fluorspar District

Mineral rights holdings

Type of mineral rights Located Claim

Land status

Ownership category National Forest

Ownership information

  • Type Owner-Operator
    Owner Robertson, William S.
    Interest 100
    Home office Oregon
    Year 1975

Production statistics

  • Year 1917
    Description Operator- California Chrome Company 1201 Long Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 1182.02mt
  • Year 1918
    Description Operator- California Chrome Company 2909 Long Tons
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Chromium Chromium 2863.03mt
  • Year 1937
    Description Operator- Unknown 288 Long Tons
  • Year 1941
    Description Operator- S. Dilsheimer 34 Long Tons
  • Year 1942
    Description Operator- Wm. Robertson 171 Long Tons
  • Year 1943
    Description Operator- Wm. Robertson 739 Long Tons
  • Year 1944
    Description Operator- Wm. Robertson 5358 Long Tons
  • Year 1945
    Description Operator- Wm. Robertson 2434 Long Tons
  • Year 1946
    Description Operator- Wm. Robertson 2383 Long Tons
  • Year 1948
    Description Operator- Wm. Robertson 2755 Long Tons
  • Year 1951
    Description Operator- J. G. Gallaher 15 Long Tons
  • Year 1952
    Description Operator- Wm. Robertson & J. G. Gallaher 445 Long Tons
  • Year 1953
    Description Operator- Wm. Robertson & J. G. Gallaher 310 Long Tons
  • Year 1954
    Description Operator- Wm. Robertson & J. G. Gallaher 689 Long Tons
  • Year 1955
    Description Operator- Wm. Robertson & J. G. Gallaher 2227 Long Tons
  • Year 1956
    Description Operator- Wm. Robertson & J. G. Gallaher 4423 Long Tons
  • Year 1957
    Description Operator- Wm. Robertson & J. G. Gallaher 3807 Long Tons
  • Year 1958
    Description Total Tonnage Through 1958. 31918 Long Tons
  • Year 1958
    Description Operator- Wm. Robertson & J. G. Gallaher 1768 Long Tons

Comments on the reserve resource information

  • FLD OP FIRST QUARTER FY 1980 SHOWS NO DEPOSIT REPORT PLANNED. OWNER: WM. S. ROBERTSON OTHER NAMES: ROBERTSON MINE, ILLINOIS RIVER MINE, BLACK BEAUTY. DROPPED FROM EVALUATION DURING FY 1980

Workings at the site

  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN STOPE
    Swell Factor .6
    Hardness of Rock HARDROCK FISSURED WITH MODERATE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. UNSUPPORTING NO FLOW
    Mine Support Chars. TIMBER W/LAGGING CONCRETE-UNREINFOR
    Avg. Length of Adits (m) 122
    Number of Adits 1
    1st Condition of Workings PART ACCESSIBLE
    2nd Condition of Workings FLOODED
    Capacity 50
    Capacity Units MT ORE/DAY
    Unit Production Cost 12
    Units of Production $/MT ORE
    Operating Days per Year 250
    Operating Shifts per Day 1
    Year of Information 1975

Reference information

Bibliographic references

  • Deposit

    OR. DEPT. GEOL. AND MIN. INDUST. BULLETIN 52, 1961,

  • Deposit

    P. 50-53.

  • Deposit

    U.S. GEOLOGICAL SURVEY MISC. FIELD STUDIES MAP MF-694, 1975.

  • Deposit

    OR. DEPT. GEOL. AND MIN. INDUST. BULLETIN 100, 1979,

  • Deposit

    PLATE 2, NO. 249.

Reporter information

Type Date Name Affiliation Comment
Reporter 12-JUL-93 Lowe, Nathan T. U.S. Bureau of Mines

Beyond USGS

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

Maps centered on this site