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Boss and Atlantus Claims

Past Producer in Cascade county in Montana, United States with commodities Silver, Lead, Zinc, Gold
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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. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10042795
MRDS ID M060828
Record type Site
Current site name Boss and Atlantus Claims
Alternate or previous names Unity and Rochester
Related records 10172912

Geographic coordinates

Geographic coordinates: -110.74417, 46.94602 (WGS84)
Elevation 1814
Relative position 1/2 MILE EAST OF NEIHART, MONTANA

Site location context

Political divisions (FIPS codes)

Cascade(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Neihart(quadrangle 1:24,000 scale)

White Sulphur Springs(quadrangle 1:100,000 scale)

White Sulphur Springs(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Belt(hydrologic unit)

Upper Missouri(hydrologic accounting unit)

Missouri-Marias(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Helena-Lewis and Clark 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 Cascade

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 014N 008E 29 Montana

Commodities

Commodity Importance
Silver Primary
Lead Primary
Zinc Critical Primary
Gold Secondary

Materials information

Materials Type of material
Galena Ore
Sphalerite Ore
Tetrahedrite Ore
Barite Gangue
Quartz Gangue

Analytical data

Result 1453 TONS MINED IN 1956 AVERAGED 3.7 PERCENT PB, 5.8 PERCENT ZN AND 35.2 OZ AG/TON

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Gneiss, Schist
    Rock description Gneiss, Schist

Nearby scientific data

(1) -110.74417, 46.94602
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Series N-Ne Trending Near-Vertical Fractures

Ore body information

  • General form TABULAR-IRREGULAR
    Strike NE
    Dip NEAR 90 DEG
    Thickness 15.24M
    Depth to top 0M
    Depth to bottom 60.96M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1884
Discoverer James Menefee
Year of first production 1956

Mining district

District name Neihart Mining District

Ownership information

  • Type Operator
    Owner Boss Mines, Inc.

Production statistics

  • Year 1956
    Material ORE
    Accuracy Estimate
    Description Ap_Grade: ^5. % Pb, 6. % Zn, 38 Oz Ag/Ton Ag
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Lead Lead 1wt-pct
    Major Ore Silver Silver 1073g/mt
    Minor Ore Zinc Zinc 6wt-pct

Comments on the reserve resource information

  • SAME AS FOR RESERVES AND POTENTIAL RESOURCES

Workings at the site

  • Type of workings Unknown
    Length 548.64M
    Overall depth 60.96M

Comments on the workings information

  • DEVELOPED BY 1270-FT. ADIT CROSSCUT WITH DRIFTS PLUS 143 FT. WINZE FROM WHICH 3 LEVELS ARE TURNED FOUR VEINS INTERSECTED BY ADIT CROSSCUT

Reference information

Bibliographic references

  • Deposit

    SCHAFER, P.A., 1935, GEOLOGY AND ORE DEPOSITS OF THE NEIHART MINING DISTRICT, CASCADE COUNTY, MONTANA: MONTANA BUREAU OF MINES AND GEOL. MEM. NO. 13, P. 47

  • Deposit

    ROBERTSON, A.F., 1951, MINES AND MINERAL DEPOSITS (EXCEPT FUELS) CASCADE COUNTY, MONTANA: U.S. BUREAU OF MINES INFO. CIRC. 7589, P. 24

  • Deposit

    WEED, W.H., 1900, GEOLOGY OF THE LITTLE BELT MOUNTAINS, MONT: USGS 20TH ANN. RPT. PT. 3

  • Production

    DMEA FILES

General comments

Subject category Comment text
Deposit 4 VEINS ARE EXPOSED. THE STRONGEST IS GENERALLY LESS THAN 10 FT. THICK BUT WIDENS NEAR A CROSS-FAULT TO 50 FT. ORE APPEARS TO BE RICHER WHERE VEIN CUTS RED FELDSPATHIC GNEISS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1974 Puffett, Willard P. U.S. Geological Survey

Beyond USGS

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

Maps centered on this site