The Norwich-Platus Mine is a manganese mine located in Silver Bow county, Montana.
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
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.
Norwich-Platus Mine MRDS details
Site Name
Primary: Norwich-Platus Mine
Commodity
Primary: Manganese
Secondary: Silver
Secondary: Lead
Secondary: Zinc
Tertiary: Uranium
Location
State: Montana
County: Silver Bow
District: Butte District
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Umont Mining, Inc.
Home Office: King St., Dock, Burlington, Vt. Or 506 Silver Bow Bldg., Butte Mt.
Owner Name: Irving And Nelson
Home Office: Silver Bow Bldg., Butte, Mt.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
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
Not available
Structure
Type: R
Description: Boulder Batholith
Alterations
Not available
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
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Galena
Ore: Rhodochrosite
Ore: Sphalerite
Comments
Comment (Deposit): 4 MANGANESE-BEARING VEINS. THE NORWICH VEIN IS WIDE, COMPLEX ALTERED SHEAR ZONE THAT HAS BEEN PARTLY FILLED AND REPLACED BY QUARTZ AND RHODOCHROSITE, SOME SPHALERITE, AND GALENA. THE VEIN IS OFFSET BY 2 TYPES OF FAULTS (1) THOSE PARALLEL TO THE VEIN (2)CROSS FAULTS THAT STRIKE NW TO N AND DIP NE OR E. THE VEIN IS MORE PERSISTENT TOWARDS THE W AND MORE HEAVILY MINERALIZED.
Comment (Geology): GEOL.DESC: RADIOACTIVE VEIN
Comment (Workings): SHAFTS, DRIFTS, CROSSCUTS
References
Reference (Deposit): USGS BULL 1074-B, P.21.
Reference (Deposit): MBMG BULL 14, P. 41
Reference (Deposit): USGS FILES
Reference (Deposit): USGS-USBM MINERAL YEARBOOKS 1953-1956.
Reference (Deposit): PMEA
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.
