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Sawtooth-Hogback Area

Prospect in Madison county in Montana, United States with commodities Chromium, Fluorine-Fluorite, Nickel, Phosphorus-Phosphates, REE, Uranium, Vanadium
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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. Nearby scientific data
  8. Ore body information
  9. Economic information about the deposit and operations
  10. Mineral rights holdings
  11. Land status
  12. Reserves and resources
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10221561
MAS/MILS ID 0300570841
Record type Site
Current site name Sawtooth-Hogback Area

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -112.13976, 44.8741 (WGS84)
Elevation 3035
Location accuracy 10(meters)

Site location context

Political divisions (FIPS codes)

Madison(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Antone Peak(quadrangle 1:24,000 scale)

Lima(quadrangle 1:100,000 scale)

Dubois(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Ruby(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Beaverhead-Deerlodge National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States Montana Madison

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 011 S 004 W 18 S2NESW Montana

Commodities

Commodity Importance
Chromium Critical Tertiary
Fluorine-Fluorite Critical Tertiary
Nickel Critical Tertiary
Phosphorus-Phosphates Primary
REE Critical Tertiary
Uranium Tertiary
Vanadium Critical Tertiary

Nearby scientific data

Ore Body (1) -112.13976, 44.8741
ListMap

Economic information

Ore body information

  • Thickness 2M
    Depth to top 5M
    Field Value
    MAS Matrix # 1
    MAS Column # 3
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Primary mode of Origin SEDIMENTATION
    Primary Ore Control BEDDING
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. NONE
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 5
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830316
  • Thickness 1.2M
    Depth to top 5M
    Field Value
    MAS Matrix # 2
    MAS Column # 3
    Type of Orebody #1 SEDIMENTARY
    Shape of Orebody #1 TABULAR
    Primary mode of Origin SEDIMENTATION
    Primary Ore Control BEDDING
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. NONE
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 5
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830316
  • Thickness 1.7M
    Depth to top 5M
    Field Value
    MAS Matrix # 3
    MAS Column # 3
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 TABULAR
    Primary mode of Origin RESIDUAL CONCENT
    Primary Ore Control BEDDING
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. NONE
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 5
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830316

Economic information about the deposit and operations

Development status Prospect
Commodity type Both
Significant No

Mineral rights holdings

Type of mineral rights Federal Lease

Land status

Ownership category National Forest

Reserves and resources

  • Type In-situ
    Estimate year 1970
    Inferred 40823000mt ore
    Total resources 47173000mt ore
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P2O5 20 wt-pct Phosphorus Major 1970
    Fluorine-Fluorite F 2 wt-pct Fluorine Trace 1970
    Uranium U 0.006 wt-pct Uranium Trace 1970
  • Type In-situ
    Estimate year 1970
    Inferred 22679000mt ore
    Total resources 25854000mt ore
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P2O5 27 wt-pct Phosphorus Major 1970
    Fluorine-Fluorite F 2.7 wt-pct Fluorine Trace 1970
    Uranium U 0.008 wt-pct Uranium Trace 1970
  • Type In-situ
    Estimate year 1970
    Inferred 31751000mt ore
    Total resources 36287000mt ore
    Commodity Subtype Grade units Group Importance Year
    Phosphorus-Phosphates P2O5 20 wt-pct Phosphorus Major 1970
    Fluorine-Fluorite F 2 wt-pct Fluorine Trace 1970
    Uranium U 0.008 wt-pct Uranium Trace 1970

Comments on the reserve resource information

  • M1 C3 RETORT MEMBER: Q50; RESOURCE BLOCK ABOVE ENTRY LEVEL, BED AREA 7562060 SQUARE METERS: Q25; RESOURCE BLOCK ABOVE FIRST 30M BELOW ENTRY LEVEL, BED AREA 8732600 SQUARE METERS; Q10; TOTAL RESOURCE IN AREA, BED AREA 149847700 SQUARE METERS. M2 C3 MEADE PEAK MEMBER, SAME BED AREAS AS M1.

Reference information

Bibliographic references

  • Reserve-Resource

    SWANSON, ROGER, 1970, MINERAL RESOURCES IN PERMIAN ROCKS OF

  • Reserve-Resource

    SOUTHWEST MONTANA, USGS PROF. PAPER 313-E, P. 722-725.

General comments

Subject category Comment text
Deposit THIS RECORD IS FOR A LARGE AREA COVEIRNG THE PHOSPHATE MINERALIZATION NEAR SAWTOOTH AND HOGBACK MTS. THUS IT INCLUDES SECS. 22,23,27,28,33,35 IN T10S R4W; SECS. 5,7 8,18,19,30 IN T11S R4W; SECS. 25,35,36 IN T11S R5W; AND SECS. 2,3,9,10,15,16 IN T12S R 5W DEPOSIT SEQ NO. 0300010519 AND 0300570545 ARE LOCATED IN THIS AREA APATITE OCCURES AS OOLITIC TO PELLETAL GRAINS THAT ARE VERY FINE TO MEDIUM SAND SIZE, NODULES ARE LOCALLY COMMON

Reporter information

Type Date Name Affiliation Comment
Reporter 15-AUG-94 Benjamin U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

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