Marietta Mine

Past Producer in Broadwater county in Montana, United States with commodities Gold, 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. 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. Land status
  17. Ownership information
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10071878
MRDS ID W015573
Record type Site
Current site name Marietta Mine
Related records 10172573

Geographic coordinates

Geographic coordinates: -111.7067, 46.36462 (WGS84)
Elevation 2195
Relative position 10 MILES NORTHWEST OF TOWNSEND, MONTANA

Site location context

Political divisions (FIPS codes)

Broadwater(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Giant Hill(quadrangle 1:24,000 scale)

Townsend(quadrangle 1:100,000 scale)

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

Hydrologic units (watersheds)

Upper Missouri(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 Broadwater

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 007N 001W 15,14,11,10 Montana

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Primary
Zinc Critical Primary
Copper Secondary

Comments on the commodity information

  • SOME OXIDATION PRODUCTS IE, AZURITE, MALACHITE OTHER MINERALS OCCURING SIDERITE, MANGANO CALCITE, ANKERITE, COVELLITE

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Sphalerite Ore
Quartz Gangue

Alteration

  • (Local) Alteration Of Andesite Around Mineralized Veins

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Andesite;Cret-Tert
    Rock description Andesite;Cret-Tert
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic)
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -111.7067, 46.36462

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith, Lombard Overthrust Large North Trending Syncline
Type of structure Local
Structure description Small Scale Faulting, Altered Dikes On At Least 2 Levels Of Marietta, Also Quartz Diorites, Andesite

Ore body information

  • General form VEIN FILLING WITH SOME LOCALIZED THICKENING OF VEINS
    Strike N 10 DEG W
    Dip 30 DEG SW
    Length 304.8M
    Width 2.74M
    Depth to top 0M

Controls for ore emplacement

  • Movement Along Vein Structure Caused Fracturing Of Earliest Formed Minerals - Quartz, Pyrite, Arsenopyrite

Comments on the geologic information

  • ALTERATION OF VOLCANICS IS SAID TO HAVE BEEN PROPYLITIZATION, SILICIFICATION OF THE ANDESITE, ARGILLIZATION OF FELDSPARS SURROUNDING MINERALIZATION

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1878
Year of first production 1880

Mining district

District name Park (Indian Creek)

Land status

Ownership category National Forest

Ownership information

  • Type Owner-Operator
    Owner Northern Milling Co., Inc.

Workings at the site

  • Type of workings Underground
    Length 2651.76M
    Overall depth 134.11M

Comments on the workings information

  • APPROXIMATELY 8700 FEET OF WORKINGS, FROM MONTANA BUREAU OF MINES BULLETIN 35 PLATE 1

Comments on development

  • REGIONAL GEOLOGIC MAPPING DONE BY USGS DURING THE SUMMER OF 1958

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit DIMENSIONS OF DEPOSIT APPROXIMATED VEIN RANGES IN THICKNESS FROM SEVERAL INCHES TO 9 FT. THE GENERAL STRIKE OF THE VEINS CHANGES ON EACH LEVEL

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1977 Mckenzie, Craig L.; R. B. Berg U.S. Geological Survey

Beyond USGS

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