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  3. Mineral Resource Data System (MRDS)

Gravely Mine

Past Producer in Powell county in Montana, United States with commodity Phosphorus-Phosphates
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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. Host and associated rocks
  8. Nearby scientific data
  9. Geologic structures
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10071318
MRDS ID W014648
Record type Site
Current site name Gravely Mine
Related records 10124582

Geographic coordinates

Geographic coordinates: -112.69312, 46.64323 (WGS84)
Elevation 1768
Relative position 10 KM NORTHWEST FROM AVON

Site location context

Political divisions (FIPS codes)

Powell(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Gravely Mountain(quadrangle 1:24,000 scale)

Elliston(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Clark Fork(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(hydrologic region)

Geographic areas

Country State County
United States Montana Powell

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 010N 009W 02 CENTER OF S2 Montana

Comments on the location information

  • LOWER E SLOPE OF GRAVELY MOUNTAIN.

Commodities

Commodity Importance
Phosphorus-Phosphates Primary

Analytical data

Result AVERAGE GRADE OF ORE SHIPPED 31.1-32.9%, 3.3-3.8% MO1STURE

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Phosphorite
    Rock unit name Phosphoria Formation (Retort Member)
    Rock description Phosphoria Formation (Retort Member)
    Stratigraphic age (youngest) Late Permian
    Stratigraphic age (youngest) Late Permian

Nearby scientific data

(1) -112.69312, 46.64323
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Northeast Limb Of Gravely Syncline

Ore body information

  • General form BLANKET
    Strike N70W
    Dip 50 SW
    Thickness 1.2M
    Depth to top 24.38M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Deposit size Small
Significant No
Year of first production 1940
Year of last production 1956

Mining district

District name Garrison District

Ownership information

  • Type Owner-Operator
    Owner Montana Phosphate Products Co., Garrison, Mt.

Production statistics

  • Year 1956
    Period 1940-1956
    Material P-ORE
    Description Cp_Grade: ^+18-31% Grade
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Phosphorus-Phosphates Phosphorus 25wt-pct

Workings at the site

  • Type of workings Underground
    Length 1100M

Comments on the workings information

  • HAULAGE ADIT, RAISES, 2 INTERMEDIATE LEVELS, 2 MORE LEVELS DRIVEN FROM AN INCLINED WINZE.

Reference information

Bibliographic references

  • Deposit

    USBM RI 6611, P. 22, 39-42.

  • Deposit

    MBMG SP 25, P. 6.

  • Deposit

    USGS BULL 847-D, P. 175-88, PL. 30.

  • Deposit

    MBMG BULL 14, P. 34.

  • Production

    USBM RI 6611, P. 39.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1976 Berg, Richard B. (Krohn, D. H.) U.S. Geological Survey
Updater 01-OCT-1982 Wise, Kristine K. (Elliott, James E.) U.S. Geological Survey

Beyond USGS

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

External references

Maps centered on this site