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Peg Leg Mine

Past Producer in Siskiyou county in California, United States with commodities Chromium, Platinum, Palladium, Iridium, Ruthenium, Rhodium
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Geologic information

Identification information

Deposit ID 10077770
MRDS ID W025722
Record type Site
Current site name Peg Leg Mine
Alternate or previous names Lambert, Chrome King
Related records 10214021

Geographic coordinates

Geographic coordinates: -122.72862, 41.62984 (WGS84)
Elevation 1024
Location accuracy 100(meters)
Relative position ABOUT 10 MI SOUTHWEST OF YREKA, Acc For Pge Sample Collection Site, Acc For Pge Sample Collection Site, Acc For Pge Sample Collection Site
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Geographic areas

Country State County
United States California Siskiyou

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 044N 008W 26 NE4 OF SE4 California

Comments on the location information

  • IN KLAMATH NATIONAL FOREST. ON SOUTH BANK OF MOFFETT CREEK. UTM GIVEN IS FOR PGE SAMPLE COLLECTION SITE. LAT/LONG GIVEN IS ESTIMATE OF MINE LOCATION, WHICH IS GIVEN AS MOUTH OF NORTH FLOWING CREEK AT MOFFETT CREEK; UTM FOR THIS IS 4608690N, 522540E

Commodities

Commodity Importance
Chromium Primary
Platinum Tertiary
Palladium Tertiary
Iridium Tertiary
Ruthenium Tertiary
Rhodium Tertiary

Materials information

Materials Type of material
Chromite Ore
Olivine Gangue

Analytical data

Result 1 PGE ANALYSIS: PT=<10 PPB
Result PD=<1 PPB
Result IR=170 PPB
Result RU=650 PPB
Result RH=21 PPB. CR:FE=3.45:1.

Mineral occurrence model information

Model code 15
USGS model code 8a
Deposit model name Podiform chromite (minor)
Mark3 model number none

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite
    Rock unit name Trinity Ultramafic Sheet
    Rock description Trinity Ultramafic Sheet
    Stratigraphic age (youngest) Late Permian
    Stratigraphic age (youngest) Late Permian
    Stratigraphic age (youngest) Late Permian
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite

Nearby scientific data

(1) -122.72862, 41.62984
ListMap

Geologic structures

Type of structure Local
Structure description Sharp Fault Striking N70-75w, Dipping 20-30n

Ore body information

  • General form LENSES, PODS, AND STRINGERS OF MASSIVE ORE

Controls for ore emplacement

  • Magmatic Segregation

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Basil Wood
    First year 1950

Production statistics

  • Year 1943
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^57.17% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Cr2O3 Chromium Chromium 57wt-pct

Reserves and resources

  • Type In-situ
    Estimate year 1943
    Total resources 45,000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 54 wt-pct Chromium Major 1943

Workings at the site

  • Type of workings Surface/Underground
    Length 91.44M

Comments on the workings information

  • LARGE OPEN CUT, 250-300 FT OF UNDERGROUND WORKINGS

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS W025722
U.S. Bureau of Mines Minerals Availability System MAS 0609300640

Bibliographic references

  • Deposit

    WELLS, F.G., AND CATER, F.W., JR., 1950, GEOLOGICAL INVESTIGATIONS OF CHROMITE IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 134, PT. 1, CH. 2, P. 112-113.

  • Deposit

    CARLSON, C.A., AND OTHERS, 1985, ANALYSES FOR PLATINUM-GROUP ELEMENTS IN SAMPLES FROM PODIFORM CHROMITE DEPOSITS, CALIFORNIA AND OREGON: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 85-442, 14 P.

General comments

Subject category Comment text
Deposit LARGEST LENS HAD 155 TONS OF ORE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-90 Peterson, Jocelyn A. U.S. Geological Survey