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Bonanza Claim

Past Producer in Del Norte county in California, United States with commodities Chromium, Iron
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Geologic information

Identification information

Deposit ID 10211753
MRDS ID M007518
MAS/MILS ID 0060150089
Record type Site
Current site name Bonanza Claim

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -123.94676, 41.93202 (WGS84)
Elevation 887
Location accuracy 100(meters)
(click for info)

Geographic areas

Country State County
United States California Del Norte

Public Land Survey System information

Meridian Township Range Section Fraction State
Humboldt 018 N 002 E 21 W2SESE California

Commodities

Commodity Importance
Chromium Tertiary
Iron Tertiary

Materials information

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

Nearby scientific data

Main Entrance (1) -123.94676, 41.93202
ListMap

Ore body information

  • Strike N30E
    Dip 30N
    Thickness 2M
    Depth to top 0M
    Width 3M
    Length 15M
    Area 1HA
    Field Value
    Type of Orebody #1 OTHER
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 DISSEMINATED
    Shape of Orebody #2 LENTICULAR
    Shape of Orebody #3 IRREGULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONITIZATION
    Strike And Dip N30E
    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

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1941
Year of first production 1942

Mining district

District name High Plateau Area

Mineral rights holdings

Type of mineral rights Other

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner U.S. Forest Service - Six Rivers National Forest
    Interest 100
    Home office California
    Year 1976

Comments on the production information

  • TOTAL PROD-137 LONG TONS AVG 50.5% CR2O3, 12.2% FE, CR/FE=2.8 RESERVE ESTIMATES IN LITERATURE-NO ORE IN PLACE WAS SEEN DURING VISIT-1975: INSUFFICIENT ORE RESERVE FOR COSTING

Workings at the site

  • Type of workings Surface
    Field Value
    MAS Development Schedule # 1
    Mining Record # 1
    Status of Mining Method PROPOSED
    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
    Operating Days per Year 200
    Operating Shifts per Day 3
    Year of Information 1976
  • Type of workings Underground
    Length 15M
    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 EXCESSIVE WATER
    Rock Characteristics MULTIPLE SYSTEMS OF WEAKNESS PLANES
    Rock Support Chars. UNSUPPORTING NO FLOW
    Mine Support Chars. TIMBER W/LAGGING CONCRETE-UNREINFOR
    Length of Inclines (m) 15
    Number of Inclines 1
    1st Condition of Workings FLOODED
    Capacity Units MT ORE/DAY
    Units of Production $/MT ORE
    Year of Information 1976

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
U.S. Bureau of Mines Minerals Availability System MAS 0060150089
USGS Mineral Resources Data System MRDS M007518 MAS references MRDS

Bibliographic references

  • Deposit

    WELLS,FG ET AL,1946 CAL DIV MINES BULL 134,PT 1,CH.1 PP 37

  • Deposit

    OBRIEN,JC 1952 CAL JOUR MINES & GEOLOGY VOL 48 P 269.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Western Field Operations Center (WFOC) U.S. Bureau of Mines