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Newman Mine

Past Producer in Alameda 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. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10138157
MRDS ID M004670
MAS/MILS ID 0060010026
Record type Site
Current site name Newman Mine
Alternate or previous names Douglas Mine, Cedar Mountain Claim ?, Menden Hall ?
Related records 10027971

Geographic coordinates

Point of reference Trench
Geographic coordinates: -121.59493, 37.60931 (WGS84)
Elevation 1037
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Alameda(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cedar Mountain(quadrangle 1:24,000 scale)

Stockton(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Joaquin Delta(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

ST(Federal land areas administered by ST)

Geographic areas

Country State County
United States California Alameda

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004 S 003 E 01 C S2 California

Commodities

Commodity Importance
Chromium Critical Tertiary
Iron Tertiary

Materials information

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

Nearby scientific data

Trench (1) -121.59493, 37.60931
ListMap

Economic information

Ore body information

  • Strike N00W
    Dip 30N
    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
    Type of Orebody #3 OTHER
    Shape of Orebody #3 OTHER
    Primary mode of Origin MAGMATIC DIFFER
    Secondary mode of Origin OTHER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONITIZATION
    Strike And Dip N00W:30N
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 1
    Date of Last Modification 820226

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1882
Year of first production 1885

Mining district

District name Cedar Mountain District

Mineral rights holdings

Type of mineral rights Fee Ownership

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Woodsworth, F.
    Interest 100
    Home office P. O. Box 2165, Redwood City, Ca 94064
    Year 1976
  • Type Owner
    Owner Mr Taylor
    Home office California
    Year 1974

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
    Primary Material Cover SAND, GRAVEL
    Percentage 15
    Secondary Material Cover M-HARD ROCKS
    Percentage 85
    Hardness of Ore SAND, GRAVEL
    Avg. Bench Height (meters) 20
    Max. Pit Slope (degrees) 60
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1976
  • Type of workings Underground
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method ESTIMATE
    Mining Method GOPHERING (COYOTING) 10-29
    Swell Factor .6
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. UNSUPPORTING NO FLOW
    Mine Support Chars. TIMBER W/LAGGING CONCRETE-UNREINFOR
    Slope of Inclines 30
    Number of Inclines 2
    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

    USGS BULL 430 1909 CHROMITE IN CALIF PP173-174

  • Deposit

    CDM AND G 17TH REPT OF STATE MINER.1921 P21

  • Deposit

    CDM AND G BULL 134 PT2 CHAPT 2 1953 ALAMEDA CO P.52

  • Deposit

    CAL STATE MIN BUR 8TH REPORT 1888PAGE 32

General comments

Subject category Comment text
Deposit THIN DISCONTINUOUS SEAM OF ORE INPLACE NO RESERVE ESTIMATE POSSIBLE. LAST OPERATOR CLAIMED 55 PCT CR2O3 CR/FE 3.5 TO 1 WAS TYPICA LAST OPERATOR CLAIMED"GOOD RESERVES WERE LEFT INSUFFICIENT DATA FOR MATRIX CALCULATION ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-MASSIVE 2 09.90,CR2O3 49.33,FEO 09.35,TOTAL FE 12.87,AL203 06.22,MGO CR/FE 3.38.DISSEMINATED ORE=S102 03.30,CR2O3 54.81,FEO 13.74 FE 16.08,AL203 08.29,MGO 12.27,CR/FE 3.00.

Reporter information

Type Date Name Affiliation Comment
Reporter 05-NOV-1984 Unknown 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.