Florence Mine

Past Producer in Cascade county in Montana, United States with commodities Silver, Lead, Zinc, Copper
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. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10103897
MRDS ID M060827
Record type Site
Current site name Florence Mine
Related records 10269357

Geographic coordinates

Geographic coordinates: -110.74417, 46.94602 (WGS84)
Elevation 1707
Relative position 1/2 MILE NORTH 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 29,30,31,32 Montana

Commodities

Commodity Importance
Silver Primary
Lead Primary
Zinc Critical Primary
Copper Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Polybasite Ore
Pyrargyrite Ore
Barite Gangue
Pyrite Gangue

Analytical data

Result 38 OZ AG/TON, 8% PB, 3.5% ZN (AVERAGE OF PRODUCTION)

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Gneiss And Schist
    Rock description Gneiss And Schist
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Plutonic Rock > Porphyry > Lamprophyre
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Pinto Diorite-Metadiorite;Gneiss, Schist
    Rock description Pinto Diorite-Metadiorite;Gneiss, Schist

Nearby scientific data

(1) -110.74417, 46.94602

Economic information

Geologic structures

Type of structure Local
Structure description Moulton Fault Apparently Delimits Southwest Extension Of Ore

Ore body information

  • General form TABULAR
    Strike NE
    Dip 90 DEG
    Plunge 60 DEG
    Plunge direction SW
    Thickness 1.83M
    Length 365.76M
    Width 1.83M
    Depth to top 0M
    Depth to bottom 335.28M

Controls for ore emplacement

  • Ne Trending Fractures

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1886
Discoverer Richard G. Wright
Year of first production 1893

Mining district

District name Neihart Mining District

Ownership information

  • Type Operator
    Owner Dan Reeder And Associates
  • Type Owner
    Owner Carroll Bennett

Comments on the production information

  • ZINC NOT REPORTED IN EARLY SALES. EARLY SHIPMENTS REPORTED TO AVERAGE 50-200 OZ AG/TON, 4-10% PB, AND 3-10% ZN

Comments on the reserve resource information

  • OME FILES

Workings at the site

  • Type of workings Unknown
    Length 2743.2M
    Overall depth 335.28M

Comments on the workings information

  • MINE DEVELOPED BY 6 ADITS PLUS VERTICAL SHAFT FROM WHICH 5 LEVELS WERE TURNED

Reference information

Bibliographic references

  • Deposit

    ROBERTSON, A.G., 1951, MINES AND MINERAL DEPOSITS (EXCEPT FUELS) CASCADE COUNTY, MONTANA: U.S. BUREAU OF MINES. INFO. CIRC. 7589, P. 24-26

  • Deposit

    SCHAFER, P.A., 1935, GEOLOGY AND ORE DEPOSITS OF THE NEIHART MINING DISTRICT, CASCADE COUNTY, MONTANA: MONTANA BUREAU OF MINES, MEM. 13, P. 34-36

  • Deposit

    WEED, W.H., 1900, GEOLOGY OF THE LITTLE BELT MOUNTAINS, MONT: USGS, 20TH ANN. RPT. PT. 3, P. 425-426

  • Deposit

    KEEFER, W.R., 1972, GEOLOGIC MAP OF THE WEST HALF OF THE NEIHART 15-MINUTE QUADRANGLE, CENTRAL MONTANA: USGS MISC. GEOL. INV. MAP I-726

  • Deposit

    1893 GEOLMAP W.H. WEED, 20TH ANN. RPT.

  • Deposit

    1964 GEOLMAP W.R. KEEFER, MAP I-276

  • Production

    U.S.B.M. INFO. CIRC. 7589, P. 25

  • Reserve-Resource

    OME FILES

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.

External references