The Lexington Mine is a silver and lead mine located in Cascade county, Montana at an elevation of 7,402 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: 7,402 Feet (2,256 Meters)
Commodity: Silver, Lead
Lat, Long: 46.94667, -110.71000
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.
Lexington Mine MRDS details
Site Name
Primary: Lexington Mine
Commodity
Primary: Silver
Primary: Lead
Tertiary: Zinc
Tertiary: Molybdenum
Location
State: Montana
County: Cascade
District: Montana (Neihart) District
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Lexington Silver-Lead Mines, Great Falls, Mt 59404
Owner Name: Lexington Silver-Lead Mines, 2229 Fifth Ave. Sw, Great Falls, Mt 59404
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Discovery Year: 1891
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: Little Belt Mountains
Mineral Deposit Model
Not available
Orebody
Form: TABULAR
Structure
Type: R
Description: Zone Of Igneous Intrusions Covering Over 800 Square Km
Type: L
Description: Domal Uplift Caused By Intrusion Of Snow Creek Porphyry, Northeast-Trending Fractures & Faults.
Alterations
Not available
Rocks
Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Galena
Comments
Comment (Workings): MINE PRINCIPALLY DEVELOPED BY 3 ADITS: A LOWER ADIT ABOUT 1000 FT. LONG, A 500 FT MIDDLE ADIT, AND A 350 FT UPPER ADIT. THE UPPER ADIT IS ABOUT 200 FT HIGHER THAN THE LOWER ADIT
Comment (Geology): PRECAMBRIAN CRYSTALLINE ROCKS ARE PRE-BELT. SNOW CREEK PORPHYRY ALSO CALLED NEIHART PORPHYRY.
Comment (Location): U.T.M. COORDINATES TAKEN ON MIDDLE ADIT
Comment (Production): ASSUMING THAT 60% OF AREA BETWEEN UPPER AND LOWER ADITS WAS STOPED AND THAT THE ORE WAS 3 FT. WIDE GIVES THE PRODUCTION ESTIMATE. PRODUCTION YEARS 1891 - EARLY 1900'S
References
Reference (Production): MAP SHOWN AS FIG. 9 IN USBM IC 7589 USED FOR ESTIMATE
Reference (Deposit): KLEINKOPF, M. D., WITKIND, I. J., AND KEEFER, W. R., 1972, AEROMAGNETIC, BOUGUER GRAVITY, AND GENERALIZED GEOLOGIC MAPS OF THE CENTRAL PART OF THE LITTLE BELT MOUNTAINS, MONTANA: U.S. GEOLOGICAL SURVEY MAP GP-837.
Reference (Deposit): ROBERTSON, A. F., 1951, MINES AND MINERAL DEPOSITS (EXCEPT FUELS), CASCADE COUNTY, MONTANA: U.S. BUREAU MINES INF. CIRC. 7589, 76 P.
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.
