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Little Siberia

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

Identification information

Deposit ID 10043085
MRDS ID M061574
Record type Site
Current site name Little Siberia
Related records 10225569

Geographic coordinates

Geographic coordinates: -123.84866, 42.27649 (WGS84)
Elevation 1055
Location accuracy 100(meters)
Relative position 1.8 MI SOUTH OF PEARSOLL PEAK
(click for info)

Geographic areas

Country State County
United States Oregon Curry

Public Land Survey System information

Meridian Township Range Section Fraction State
Willamette 038S 010W 11 NE4 OF SW4 Oregon

Comments on the location information

  • IN KALMIOPSIS WILDERNESS IN SISKIYOU NATIONAL FOREST. UTM GIVEN IS FOR PGE SAMPLE SITE LOCATION. LAT/LONG GIVEN IS FOR LITTLE SIBERIA MINE SHOWN ON TOPO MAP; UTM FOR THIS IS 4680640N, 430120E.

Commodities

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

Materials information

Materials Type of material
Chromite Ore
Talc Gangue

Alteration

  • (Local) Serpentinized

Analytical data

Result PICKED HIGH-GRADE SAMPLE ASSAYED 55.07% CR2O3, 13.14% FE
Result 1 PGE ANALYSIS: PT=<10 PPB
Result PD=<4 PPB
Result IR=40 PPB
Result RU=200 PPB
Result RH=21 PPB.

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 Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite
    Rock unit name Pearsoll Peak Ophiolite
    Rock description Pearsoll Peak Ophiolite
    Stratigraphic age (youngest) Late Jurassic
    Stratigraphic age (youngest) Late Jurassic

Nearby scientific data

(1) -123.84866, 42.27649
ListMap

Geologic structures

Type of structure Local
Structure description Landslide

Ore body information

  • General form STRINGERS, LENSES, SCHLIEREN, DISSEMINATED
    Width 1.52M

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

Mining district

District name Pearsoll Peak Area

Land status

Ownership category National Wilderness
Area name Siskiyou National Forest

Ownership information

  • Type Owner
    Owner Jackson, Roy
    Last year 1961

Production statistics

  • Year 1954
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^44% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 44wt-pct
  • Year 1955
    Period 1951-1955
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^Mill Ore, 44% Cr2o3 (Weighted Average Grade)
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 44wt-pct

Comments on the production information

  • MOST ORE LOW GRADE, NEEDED CAREFUL SORTING. RAMP ESTIMATES GIVEN FOR TOTAL PRODUCTION.

Comments on the workings information

  • OPEN CUT, SHORT DRIFT

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M061574
U.S. Bureau of Mines Minerals Availability System MAS 0410150024

Bibliographic references

  • Deposit

    RAMP, LEN, 1961, CHROMITE IN SOUTHWESTERN OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 52, P. 103-104.

  • Deposit

    THAYER, T.P., 1974, U.S. GEOLOGICAL SURVEY, UNPUB. DATA

  • Deposit

    PAGE, N.J, JOHNSON, M.G., HAFFTY, JOSEPH, AND RAMP, LEN, 1975, OCCURRENCE OF PLATINUM GROUP METALS IN ULTRAMAFIC ROCKS OF THE MEDFORD-COOS BAY 2 DEGREE QUADRANGLE, SOUTHWESTERN OREGON: U.S. GEOLOGICAL SURVEY MISCELLANEOUS FIELD STUDIES MAP MF-694, SCALE 1:250,000.

  • Deposit

    RAMP, LEN, SCHLICKER, H.G., AND GRAY, J.J., 1977, GEOLOGY, MINERAL RESOURCES, AND ROCK MATERIAL OF CURRY COUNTY, OREGON: OREGON DEPARTMENT OF GEOLOGY AND MINERAL INDUSTRIES BULLETIN 93, P. 31.

  • 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 ORE IS SIMILAR TO THAT AT PEARSOLL PEAK MINE. ORE ZONE IS IRREGULAR, LENSES TAPER AND HAVE MINOR FAULT OFFSETS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-76 Johnson, Maureen G. U.S. Geological Survey
Updater 01-MAR-81 Ferns, Mark L. (Brooks, Howard C.) Oregon Department of Geology and Mineral Industries
Updater 01-MAY-89 Peterson, Jocelyn A. U.S. Geological Survey