The N. G. Group is a manganese mine located in Granite 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.
N. G. Group MRDS details
Site Name
Primary: N. G. Group
Secondary: Mountain View
Secondary: Manganese Fraction
Commodity
Primary: Manganese
Secondary: Silver
Location
State: Montana
County: Granite
District: Philipsburg (Granite-Flint Creek) District
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: L. H. Page And R. H. Hartly
Home Office: Box 273, Philipsburg, Mt.
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1917
Year Last Production: 1956
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Flint Creek Range
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: Philipsburg Batholith
Type: L
Description: Philipsburg Antlcline Philipsburg Overthrust
Alterations
Not available
Rocks
Name: Limestone
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cambrian
Name: Limestone
Role: Host
Age Type: Host Rock
Age Young: Late Cambrian
Analytical Data
Analytical Data: N. G. VEIN CONTAINS 38-44% MN.
Materials
Gangue: Quartz
Comments
Comment (Deposit): SILVER-BEARING QUARTZ VEIN TRENDS EAST AND PITCHES DEEPLY SOUTH. ON N.G. CLAIM HAS A BODY OF MANGANESE OXIDE 8 FT WIDE AND 50 FT IN STOPE LENGTH, 20-50 FT IN PITCH LENGTH.
Comment (Location): N SIDE OF CAMP CREEK.
Comment (Production): MODERATE PRODUCTION OF CRUDE ORE AND CONCENTRATE.
Comment (Workings): JIGGING WAS USED, ADITS, DRIFTS
References
Reference (Deposit): USGS BULL 725, P. 173.
Reference (Deposit): USGS BULL 1237, P. 15- 57.
Reference (Deposit): MBMG BULL 10, P. 21.
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.
