Gregory Mine

The Gregory Mine is a lead and silver mine located in Jefferson county, Montana at an elevation of 5,561 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Name: Gregory Mine  

State:  Montana

County:  Jefferson

Elevation: 5,561 Feet (1,695 Meters)

Commodity: Lead, Silver

Lat, Long: 46.39, -112.11472

Map: View on Google Maps

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.


Satelite image of the Gregory Mine

Gregory Mine MRDS details

Site Name

Primary: Gregory Mine


Commodity

Primary: Lead
Primary: Silver
Secondary: Gold
Secondary: Copper
Secondary: Zinc
Tertiary: Arsenic


Location

State: Montana
County: Jefferson
District: Colorado (Corbin-Wickes) District


Land Status

Not available


Holdings

Not available


Workings

Type: Underground


Ownership

Owner Name: Helena - Livingston Smelting And Refining Co.


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1867
Discovery Year: 1864
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains


Mineral Deposit Model

Not available


Orebody

Form: TABULAR


Structure

Type: R
Description: Boulder Batholith, South-Trending Syncline In Elkhorn Mountains Volcanics

Type: L
Description: North-South Trending Faults West Of Mine; Roof Pendant Of Elkhorn Mountains Volcanics


Alterations

Alteration Type: L
Alteration Text: Pyritized, Sericitized, Tourmalinized


Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous


Analytical Data

Analytical Data: ORE CONTAINED AS MUCH AS 15% ZN. ORE SHIPPED FROM 1889-1990 CONTAINED 0.5-1.0 OZ/TON AU, 20-30 OZ/TON AG AND 10-30% PB.


Materials

Ore: Gold
Ore: Chalcopyrite
Ore: Galena
Ore: Sphalerite
Gangue: Quartz
Gangue: Pyrite


Comments

Comment (Development): 4 PATENTED CLAIMS: BONNER, COMPROMISE, GREGORY, GREGORY MILL SITE, MATCHLESS.

Comment (Deposit): THE VEIN DIPS 65 N IN UPPER LEVELS AND 80 N IN THE LOWER LEVELS. THE GOES THROUGH THE VOLCANICS IN TO THE BATHOLITH. VOLCANIC ROCKS THROUGH LEVEL 618, BATHOLITHIC ROCKS FROM 521-720 LEVEL.

Comment (Workings): MINE DEVELOPED BY A 730 FT. SHAFT WITH 6 LEVELS AT DEPTHS OF 257, 339, 425, 521, 618 AND 720 FT. SHAFT REOPENED IN 1941 AND SOME DRIFTS WERE OPENED FOR ABOUT 400 FT.

Comment (Location): 4.5 KM NNW OF WICKES

Comment (Production): PRODUCTION ESTIMATED USING METAL RATIOS OF TAILINGS AND DUMP MATERIAL, ESTIMATED TOTAL VALUE OF ORE, AND ESTIMATED TONNAGE MINED. MOST PRODUCTION BETWEEN 1867 AND 1886. 1917-1957 PRODUCTION CONSISTED MAINLY OF REWORKED TAILINGS, DUMPS, AND SLAG $8000000 HAS BEEN SAID TO HAVE BEEN TAKEN FROM THESE MINES BEFORE 1917.


References

Reference (Deposit): MBMG BULL 16, P. 6, 44, 46, 50-1, 108.

Reference (Deposit): USGS PP 428, P. 35, 69, 71.

Reference (Deposit): USGS BULL 842, P. 245.

Reference (Deposit): USGS BULL 527, P. 117.

Reference (Production): MBMG BULL 16, P. 108. USGS PP 428, P. 71.


Colorized Mining Photos

Drumlummon Mine at Marysville, Montana late 1880s

Western Mining History's collection of colorized mining photos includes incredible scenes from Montana: Best Historical Photos: Colorized Mining Scenes.