The Boston Colby Property is a copper mine located in Mineral county, Montana at an elevation of 3,599 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: 3,599 Feet (1,097 Meters)
Commodity: Copper
Lat, Long: 47.41278, -115.52139
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.
Boston Colby Property MRDS details
Site Name
Primary: Boston Colby Property
Commodity
Primary: Copper
Secondary: Silver
Secondary: Gold
Location
State: Montana
County: Mineral
District: Denemora District
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Boston Colby Mining Co.
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Bitterroot Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: A General Structural Grain Trends Nw And Is Made Of A System Of Subparallel Faults And Folds
Type: L
Description: Two Bedding Plane Faults, One Of Which Contains The Ore Bearing Vein, As Well As A Strike Fault
Alterations
Not available
Rocks
Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Quartzite
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Gold
Ore: Silver
Ore: Chalcopyrite
Gangue: Quartz
Gangue: Siderite
Gangue: Pyrite
Gangue: Limonite
Comments
Comment (Workings): 2 SHAFTS, 80 AND 25 FT RESPECTIVELY; 400 AND 800 FT ADITS; 600 FT OF DRIFTS; 200 FT OF CROSS-CUTS; 30 FEET OF RAISES; ONE 20 FT. WINZE.
Comment (Geology): COUNTRY ROCK STRIKES NW AND DIPS 50 DEG SW.
Comment (Deposit): 1914 PUBLICATION STATES THAT JUDGING FROM THE EXISTENCE OF POROUS COPPER-STAINED LIMONITE, THE DEPOSIT MAY HAVE A ZONE OF ENRICHMENT AT DEPTH. ; INFO.SRC : 1 PUB LIT
Comment (Deposit): SULFIDES ARE SPARSELY DISTRIBUTED WITHIN VEIN.
Comment (Location): NEAR THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC R.R. TRACK.
Comment (Development): 9 PATENTED CLAIMS. MINE WAS OPERATING AT LEAST UNTIL 1934 .
References
Reference (Deposit): CALKINS, F. C., AND JONES, E. L. JR., 1914 , ECONOMIC GEOLOGY OF THE REGION AROUND MULLAN, IDAHO AND, SALTESE, MONTANA: US GEOLOGICAL SURVEY BULL. 540 , P. 198-199 .
Reference (Deposit): WALLACE, R. E., AND HOSTERMAN, J. W., 1956 , RECONNAISANCE GEOLGOY OF WESTERN MINERAL COUNTY, MONTANA: US GEOLOGICAL SURVEY BULL. 1027-M, PL. 48 .
Reference (Deposit): GILBERT, F. C., 1935 , DIRECTORY OF MONTANA MINING PROPERTIES: MONTANA BUREAU OF MINES AND GEOLOGY MEM. 15 , P. 60 .
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.
