Sam Gaty Mine

Producer in Lewis and Clark county in Montana, United States with commodities Gold, Silver, Lead, 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. 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. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10108488
MRDS ID DC09581
Record type Site
Current site name Sam Gaty Mine
Alternate or previous names No. 1 Shaft, Franklin Mine

Geographic coordinates

Geographic coordinates: -112.07449, 46.63879 (WGS84)
Location accuracy 250(meters)
Relative position 5.8 KM NW OF CITY PARK HELENA.

Site location context

Political divisions (FIPS codes)

Lewis and Clark(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Scratchgravel Hills(quadrangle 1:24,000 scale)

Elliston(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Missouri(hydrologic unit)

Upper Missouri(hydrologic accounting unit)

Missouri-Marias(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Montana Lewis and Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 010N 004W 11 Montana

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Secondary
Copper Secondary

Materials information

Materials Type of material
Galena Ore
Gold Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result (1900'S)

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Scratchgravel Quartz Monzonite Stock
    Rock description Scratchgravel Quartz Monzonite Stock
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite

Nearby scientific data

(1) -112.07449, 46.63879

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith
Type of structure Local
Structure description Scratchgravel Quartz Monzonite Stock

Ore body information

  • Strike N 50-55 E
    Dip 40-65 SE
    Depth to bottom 123.44M

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1870
Year of last production 1971

Mining district

District name Scratchgravel Hills District

Ownership information

  • Type Operator
    Owner Helena Minerals Co., Inc.
    Home office C/O Chester Leirness 1900 11th Ave. Helena, Mt.
  • Type Owner
    Owner C. E. Pew And Others
    Home office C/O Monida Vaughn, 937 11th Ave.Helena, Mt. 59601

Workings at the site

  • Type of workings Underground
    Length 243.84M
    Overall depth 97.54M

Comments on the workings information

  • MOST WORK WAS DONE THROUGH THE FRANKLIN AND SCRATCH GRAVEL MINES FROM 1914-1919.

Comments on development

  • 150T/D MILL CAPACITY.

Reference information

Bibliographic references

  • Deposit

    USGS BULL 842, P. 36, 41-2.

  • Deposit

    MBMG BULL 82, P. 14

  • Production

    MBMG BULL 82, P. 14.

General comments

Subject category Comment text
Deposit IN 1914 THE SAM GATY AG-PB VEIN WAS FOUND TO CONTAIN RICH AU ORE. THE GATY VEIN CUTS AND DISPLACES THE GOLD VEIN.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-74 Unknown U.S. Geological Survey
Updater 01-NOV-81 Wise, Kristine K. (Elliott, James E.) U.S. Geological Survey

Beyond USGS

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