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Lambert Claim

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

Identification information

Deposit ID 10214021
MRDS ID W025722
MAS/MILS ID 0060930640
Record type Site
Current site name Lambert Claim
Alternate or previous names Chromite King, Moffett Creek Group, Peg Leg Mine, White and Brown
Related records 10077770

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -122.72892, 41.62984 (WGS84)
Elevation 1024
Location accuracy 10(meters)
(click for info)

Geographic areas

Country State County
United States California Siskiyou

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 044 N 008 W 26 SENESE California

Commodities

Commodity Importance
Chromium Tertiary
Iron Tertiary

Materials information

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

Nearby scientific data

Main Entrance (1) -122.72892, 41.62984
ListMap

Ore body information

  • Strike N73W
    Dip 25N
    Thickness 1M
    Depth to top 0M
    Width 7M
    Length 21M
    Area 1HA
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 IRREGULAR
    Shape of Orebody #2 TABULAR
    Shape of Orebody #3 LENTICULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control IGNEOUS
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONITIZATION
    Strike And Dip N73W
    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
Deposit size Small
Significant No
Discovery year 1917
Year of first production 1917

Mining district

District name Fort Jones-Moffet

Mineral rights holdings

Type of mineral rights Other

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner C. F Shaw (Operator
    Home office California
    Year 1976
    Last year 1943
  • Type Operator
    Owner Rough Mountain Mining Co (Possibly Last Operator
    Home office California
    Year 1976
    Last year 1954
  • Type Owner
    Owner U.S. Forest Service - Klamath National Forest
    Interest 100
    Home office California
    Year 1976

Reserves and resources

  • Type In-situ
    Estimate year 1950
    Inferred 150mt ore
    Demonstrated 10mt ore
    Indicated 10mt ore
    Total resources 160mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 54 wt-pct Chromium Trace 1950

Workings at the site

  • Type of workings Surface
    Area 1HA
    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
    Year of Information 1976
  • Type of workings Underground
    Length 60M
    Overall depth 20M
    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) 23
    Number of Adits 2
    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 0060930640
USGS Mineral Resources Data System MRDS W025722 MAS references MRDS

Bibliographic references

  • Deposit

    WELLS,FG& FW CATER,1950, CAL DIV MINES BULL 134,PT1,CHAP2,P.

  • Deposit

    ALLEN,JE,1941,GEOL INVEST CR DEP,CAL DIV MINES REPT 37,P127-

General comments

Subject category Comment text
Deposit PEG LEG ORE HAS HIGHEST CR/FE (= 3.3-3.45) IN SISKIYOU COUNT PED ORE RAN 54 PERCENT CR2O3. PRODUCTION THROUGH 1943 WAS FR TO 937 LONG TONS. ANOTHER FEW HUNDRED TONS MAY HAVE BEEN PRO IN THE FIFTIES. MINE VISTED 4 NOV1975 BY CDMG. ORE RAN 11.8 FE. CR/FE=3.33. ORE RESERVE ESTIMATE BY WELLS&CATER 1950 (RE 1. INADEQUATE RESOURCES FOR COSTANALYSIS. ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-MASSIVE 2 02.32,CR2O3 47.50,FEO 12.28,TOTAL FE 16.08,AL203 15.06,MGO CR/FE 2.60.DISSEMINATED ORE=S102 03.57,CR2O3 52.62,FEO 11.89 FE 16.72,AL203 09.92,MGO 14.92,CR/FE 2.77.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Stinson U.S. Bureau of Mines