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Moffet Johnson

Past Producer in Madison county in Montana, United States with commodities Copper, Gold, Silver
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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. Mining district
  11. Mineral rights holdings
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10221762
MAS/MILS ID 0300570036
Record type Site
Current site name Moffet Johnson
Alternate or previous names Moffat Mine

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -112.18977, 45.6035 (WGS84)
Elevation 2073
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

Old Baldy Mountain(quadrangle 1:24,000 scale)

Butte South(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Jefferson(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 003 S 005 W 02 NWSW Montana

Comments on the location information

  • DEPOSIT ALSO IN SECTION 3

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Silver Secondary

Nearby scientific data

Main Entrance (1) -112.18977, 45.6035
ListMap

Economic information

Ore body information

  • Thickness 15M
    Length 90M
    Width 35M
    Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 LENTICULAR
    Shape of Orebody #2 IRREGULAR
    Primary mode of Origin CONT METASOMATIC
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Date of Last Modification 830316
  • Thickness 30M
    Length 100M
    Width 20M
    Depth to top 0M
    Field Value
    MAS Matrix # 2
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 LENTICULAR
    Shape of Orebody #2 IRREGULAR
    Primary mode of Origin CONT METASOMATIC
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830316
  • Thickness 25M
    Length 190M
    Width 30M
    Field Value
    MAS Matrix # 3
    MAS Column # 1
    Type of Orebody #1 REPLACEMENT
    Shape of Orebody #1 LENTICULAR
    Primary mode of Origin CONT METASOMATIC
    Primary Ore Control CONTACT ZONE
    Secondary Ore Control LITHOLOGY
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONATE SILIC
    Minimum Depth to Top 0
    Min. Thick. Unconsol. Mat. 0
    Date of Last Modification 830316

Comments on the geologic information

  • MADISON FORMATION IS MASSIVE, MINOR FOLDING, BEDS STRIKE NOR TH, DIP 45 TO 80 DEG WEST. WHITE COARSELY CRYSTALLINE MARBLE HAS FORMED ALONG MANY QUARTZ AND MONZONITE-LIMESTONE CONTACTS TACTITE IS IRREGULAR IN SHAPE, COMPOSED MAINLY OF MASSIVE GR ANULAR BROWN GARNET, WITH FINE GRAINED LIGHT GREEN DIOPSIDE IN SOME PLACES. EPIDOTE, WOLLASTONITE ARE FOUND IN SMALLER AMOUNTS. TWO TYPES OF HORNFELS HAVE RESULTED FROM CONTACT ACTION BETWEEN THE QUARTZ MONZONITE AND THE LIMESTONE. A MASSIVE, LIGHT GREEN DIOPSIDE HORNFELS AND A SILICEOUS HORNFELS.

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1900
Year of first production 1916

Mining district

District name Tidal Wave

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Pollinger, E. M.
    Home office Twin Bridges, Mt
    Year 1978
  • Type Owner
    Owner John Fox, Missoula Mont.
    Home office Montana
  • Type Owner
    Owner Francis Bradley, San Bernardino Ca.
    Home office California
  • Type Owner
    Owner H. C. Hopkins, Butte Mont., Johnston Estate Administrator
    Home office Montana
  • Type Operator
    Owner H. R. Hakes And Associates, Sheridan Mont.
    Interest 100
    Home office Montana

Production statistics

  • Year 1916
    Description 2.32% Cu, 13.37 G/Mt Ag, .617 G/Mt Au 579 Mt Ore Per Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Ore Gold Gold 1g/mt
    Trace Ore Silver Silver 13g/mt
    Major Ore Copper Copper 2wt-pct
  • Year 1944
    Description 2.84% Cu, 23.31 G/Wt Ag, .823 G/Mt Au 369 Mt Ore Per Year
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Ore Gold Gold 1g/mt
    Trace Ore Silver Silver 23g/mt
    Major Ore Copper Copper 3wt-pct

Comments on the production information

  • PROPERTY CONSISTS OF 15 PATENTED CLAIMS COVERING 58 HECTARE

Comments on the reserve resource information

  • MATRIX 1 IS FOR THE SULFIDE ORE. THIS IS COMPOSED OF 2 ORE SHOOTS. #1 SHOOT:AREA OF ORE BODY IN PLAN 181M2, 31M DEEP. #2 SHOOT: AREA OF ORE BODY IN PLAN 467M2, 45M DEEP. THE 2 SHOOTS ARE SEPARATED BY 75M OF WEAKLY MINERALIZED GROUND. MATRIX 2 IS FOR THE OXIDIZED ORE. THIS ZONE IS ON THE SURFA CE AND IS 2623M2 IN PLAN AND 20 M DEEP. IT IS 40 M EAST OF S ULFIDE ORE. MATRIX 3 IS FOR THE COMBINATION OF THE SULFIDE AND OXIDE ORE ZONES. THE MINERALIZATION IS ONE OF IRREGULAR TACTITE ZONE S RINGING IRREGULAR ISLANDS OF LIMESTONE SURROUNDED BY QUART Z MONZONITE. NO STRIKE AND DIP OF ORE ZONES, THEY ARE IRREGU LAR IN THEIR LOCATION.
  • THIS MATRIX IS FOR THE SULFIDE ORE OF THE PROSPECT. THIS TONNAGE IS LOCATED IN 2 TACTITE ORE SHOOTS. ORE SHOOT 1 HAS 5443 TONS INDICATED AND 10886 TONS INFERRED. ORE SHOOT 2 HAS 22679 TONS INDICATED AND 45359 TONS INFERRED. THIS MATRIX IS FOR} THE OXIDIZED SURFACE ORE BODY OF THE PROSPECT. THIS MATRIX IS FOR THE COMBINED OXIDE AND SULFIDE ORE OF THE PROSPECT. M3CI=MICI+M2CI MATRIX 3 COLUMN 1 EQUALS MATRIX 1 COLUMN 1(SULFIDE) PLUS MAT IX 2 COLUMN 1 (OXIDE).

Reference information

Bibliographic references

  • Deposit

    ROBY, R.N., 1946, EXPLORATION OF THE MOFFET-JOHNSTON COPPER

  • Deposit

    PROPERTY, MADISON COUNTY, MONTANA, USBM REPT. OF INVESTIGATI

  • Deposit

    ON 3939, 12 P.

  • Deposit

    USBM MINERAL PROPERTY FILE 21.138, WESTERN FIELD OPERATION

  • Deposit

    CENTER, SPOKANE WASH.

  • Deposit

    FULL, R.P., ARMSTRONG, F.C., 1945, GEOLOGY AND ORE DEPOSITS

  • Deposit

    OF THE MOFFET-JOHNSTON PROPERTY, MONTANA, USGS REPORT, 7 P.

  • Deposit

    WINCHELL, A.N., 1914, MINING DISTRICTS OF THE DILLON QUAD, M

  • Deposit

    ONTANA AND ADJACENT DISTRICTS: USGS BULL. 574, P. 147-158.

  • Deposit

    JOHNS, W. M., 1961, GELOLGY AND ORE DEPOSITS OF THE SOUTHERN

  • Deposit

    TIDAL WAVE MINING DISTRICT, MADISON COUNTY, MONTANA, MONT. B

  • Deposit

    UR. MINES AND GEOL., BULL. 24, 53 P.

  • Deposit

    REID, R.R., 1957, BEDROCK GEOLOGY OF THE NORTH END OF THE TO

  • Deposit

    BACCO ROOT MOUNTAINS, MADISON COUNTY, MONTANA: MONT. BUR. MI

  • Deposit

    NES AND GEOL., MEMOIR 36.

  • Deposit

    REYNER, M.L., 1947, GEOLOGY OF THE TIDAL WAVE DISTRICT, MADI

  • Deposit

    SON COUNTY, MONTANA: UNPUBLISHED MASTERS THESIS, MONT. SCHOO

  • Deposit

    L OF MINES.

  • Deposit

    TANSLEY, W., SCHAFER, P.A., AND HART, L.H., 1933, A GEOLOGIC

  • Deposit

    AL RECONNAISSANCE OF THE TOBACCO ROOT MOUNTAINS: MONT. BUR.

  • Deposit

    MINES AND GEOL., MEMOIR 9.

  • Deposit

    MONTANA BUREAU OF MINES AND GEOLOGY BULL 100, 1976, 15P.

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-84 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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