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Moulton Mine

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

Geologic information

Identification information

Deposit ID 10071389
MRDS ID W014736
Record type Site
Current site name Moulton Mine

Geographic coordinates

Geographic coordinates: -110.73445, 46.93935 (WGS84)
Elevation 1791
Relative position ABOUT 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 29,32 Montana

Comments on the location information

  • DEPOSIT ON UNSURVEYED TERRITORY, SECTION NUMBERS ESTIMATED UTM COORDINATES OF SHAFT.

Commodities

Commodity Importance
Silver Primary
Lead Secondary
Zinc Critical Secondary

Comments on the commodity information

  • HIGH GRADE ORE GENERALLY FOUND AS NARROW STRINGERS WITHIN VEIN

Materials information

Materials Type of material
Polybasite Ore
Proustite Ore
Pyrite Ore
Barite Gangue
Rhodochrosite Gangue

Alteration

  • (Local) Sericitization & Carbonatization

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Snow Creek Porphyry-Pluton And Dikes Of Rhyolite Porphyry;Pinto Diorite-Large Phenocrysts Of Feldspar & Hornblende
    Rock description Snow Creek Porphyry-Pluton And Dikes Of Rhyolite Porphyry;Pinto Diorite-Large Phenocrysts Of Feldspar & Hornblende
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Belt, Neihart Quartzite;Gneiss And Schist
    Rock description Belt, Neihart Quartzite;Gneiss And Schist

Nearby scientific data

(1) -110.73445, 46.93935
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Zone Of Igneous Intrusions Covering Over 800 Square Km
Type of structure Local
Structure description Moulton Fault - With N 70 Deg W Strike And Steep 85 Deg N Dip. - Suggested To Be Pre-Mineral

Ore body information

  • General form TABULAR
    Strike N 30 E
    Dip 80 - 90 NW
    Width 2M

Controls for ore emplacement

  • Ore Localized In Shoots Caused By Intersection Of Main Vein With Gneiss Banding - Ore Also Improves As Vein Nears Fault

Comments on the geologic information

  • PRECAMBRIAN CRYSTALLINE ROCKS ARE PRE-BELT.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1882
Discoverer Jonathan Mcassey
Year of first production 1895

Mining district

District name Neihart District

Ownership information

  • Type Owner
    Owner Peter S. Antonioli And Son
    Home office 1001 West Gold, Butte, Mt 59701

Comments on the production information

  • EARLY PRODUCTION RECORDS VAGUE. PRODUCTION FROM 1918-1923 HAD REPORTED VALUE OF $1,500,000 MOSTLY IN SILVER.

Comments on the reserve resource information

  • SCHAFER STATES THAT WHILE DEVELOPED PORTION ESSENTIALLY MINED OUT, IT IS PROBABLE THAT ORE EXISTS TO A CONSIDERABLE DEPTH BELOW THE PRESENT WORKINGS. ASSUMING THAT THE MINE IS DEVELOPED TO THE 500 LEVEL AND ASSUMING THAT THE VEIN CONTINUES DOWNWARD FOR AN ADDITIONAL 250 FT. WITH A WIDTH OF 3 FEET GIVES THE RESOURCE ESTIMATE. ORE PRODUCED APPEARS TO HAVE BEEN HIGH GRADE BUT THE PAY WIDTH WAS PROBABLY ABOUT 1 FT SO THE LOW GRADE SHOWN IS DUE TO DILUTION FOR A 3 FT WIDE STOPE

Workings at the site

  • Type of workings Underground
    Length 2000M
    Overall depth 200M

Comments on the workings information

  • DEPOSIT DEVELOPED BY 550 FT. SHAFT WITH LEVELS AT 100 FT. INTERVALS AND 2 ADITS, THE MOULTON TUNNEL & THE BLACKSMITH TUNNEL. MINE STATUS CURRENTLY REPORTED AS DEVELOPING.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit Discovery Year: EARLY 1880'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1976 Mlynarczyk, Meg S. 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