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Parker Ranch

Past Producer in Placer county in California, United States with commodities Chromium, Iron
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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. Reserves and resources
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10188580
MRDS ID M012221
MAS/MILS ID 0060610188
Record type Site
Current site name Parker Ranch
Alternate or previous names Mcnear Lease, Auburn Chrome Mine, Meadowbrook Ranch
Related records 10109297

Geographic coordinates

Point of reference Trench
Geographic coordinates: -121.10163, 38.97929 (WGS84)
Elevation 431
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Auburn(quadrangle 1:24,000 scale)

Sacramento(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 013 N 008 E 17 SWSENE California

Commodities

Commodity Importance
Chromium Critical Tertiary
Iron Tertiary

Materials information

Materials Type of material
Chromite Unknown
Olivine Unknown
Pyroxene Unknown
Serpentine Unknown

Nearby scientific data

Trench (1) -121.10163, 38.97929
ListMap

Economic information

Ore body information

  • Strike N00W
    Dip 80E
    Thickness 15M
    Length 46M
    Width 6.1M
    Area 1HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 SHEAR ZONE
    Shape of Orebody #2 IRREGULAR
    Shape of Orebody #3 LENTICULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control IGNEOUS
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONITIZATION
    Strike And Dip N00W:80E
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 1
    Date of Last Modification 830316

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1917
Year of first production 1918

Mining district

District name Auburn Area

Mineral rights holdings

Type of mineral rights Other

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Calvin H Oest
    Interest 100
    Home office California
    Year 1976
  • Type Operator
    Owner Chester C Butcer--John C Wold (Last Operators- 1943-44)
    Home office California
    Year 1976

Reserves and resources

  • Type In-situ
    Estimate year 1953
    Inferred 5000mt ore
    Total resources 7000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 8 wt-pct Chromium Trace 1953
    Iron Fe 4 wt-pct Iron Trace 1953

Comments on the reserve resource information

  • RESERVE ESTIMATE BASED ON RYNEARSON(1953) CR:FES1.53 CONCENTRATES RAN 4393% CR2O3,19.7% FE PRODUCTION ESTIMATED TONS. CDMG MINE VISIT 4 DEC 1975 HOUSING SUBDIVISIONS SURRO E ON TWO SIDES-FUTURE OF MINING HERE IS DOUBTFUL INADEQUATE RESOURCES FOR COST ANALYSIS. ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-DISSEMIN E=S102 14.16,CR2O3 33.62,FEO 10.86,TOTAL FE 15.44,AL203 08.5 0.73,CR/FE 1.92

Workings at the site

  • Type of workings Surface
    Area 1HA
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Mining Method OPEN PIT
    Swell Factor .6
    Avg. Overburden Thickness 0
    Hardness of Ore M-HARD ROCKS
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1976
  • Type of workings Underground
    Length 74M
    Overall depth 9M
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    Mining Method OPEN STOPE
    Swell Factor .6
    Hardness of Rock SOFT NONPLASTIC WITH LITTLE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. UNSUPPORTING NO FLOW
    Mine Support Chars. TIMBER W/LAGGING CONCRETE-UNREINFOR
    Number of Shafts 1
    Avg. Length of Adits (m) 13
    Number of Adits 5
    1st Condition of Workings CAVED AT PORTAL
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1976

Reference information

Bibliographic references

  • Deposit

    RYNEARSON,GA 1953 CAL DIV MINES BULL 134,PT 3,CH 5, PP 230-

  • Deposit

    TALIAFERRO,NL 1918 COOP WAR MINERHC INVEST PROS(UNPUBL) AUBU

  • Deposit

    BRADLEY,WW 1918 UNPBL CAL ST M.N BUR FIELD REPT,PLACER CO 26

  • Deposit

    BRADLEY,WW 1918 MN&CR IN CAL.CAL ST MIN BUR BULL 76 PP 161-

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Wetzel, Nicholas 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

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.