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
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.
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.
Principal Gold Districts of Montana
In Montana, 54 mining districts have each have produced more than 10,000 ounces of gold. The largest producers are Butte, Helena, Marysville, and Virginia City, each having produced more than one million ounces. Twenty seven other districts are each credited with between 100,000 and one million ounces of gold production. Read more: Principal Gold Districts of Montana.
