The Gilt Edge Mine is a gold mine located in Fergus county, Montana at an elevation of 5,000 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: 5,000 Feet (1,524 Meters)
Commodity: Gold
Lat, Long: 47.14417, -109.22639
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.
Gilt Edge Mine MRDS details
Site Name
Primary: Gilt Edge Mine
Secondary: Gilt Edge Group
Secondary: Virgin Gulch
Secondary: Turtle Winds Shaft
Secondary: Heath Mill
Commodity
Primary: Gold
Secondary: Silver
Location
State: Montana
County: Fergus
District: Warm Springs - Gilt Edge District
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Blue Range Mining Co. Ltd Partnership
Percent: 100.0
Home Office: 305 W. Mercury St., Butte MT 59701
Years: 1988 -
Owner Name: Sunshine Mining Co.
Home Office: Kellogg Idaho
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Au-Ag-Te vein
Operation Type: Surface-Underground
Milling Method: Flotation
Year First Production: 1883
Discovery Year: 1883
Discovery Method: Unknown
Years of Production:
Organization:
Significant: Y
Deposit Size: S
Physiography
General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Missouri Plateau, Unglaciated
Physiographic Detail: Judith Mountains
Mineral Deposit Model
Model Name: Alkaline Au-Te (Au-Ag-Te veins)
Orebody
Form: POD/LENS
Structure
Type: R
Description: Large Laccolithic And Stock Intrusives Of Rhyolite And Quartz Monzonite
Type: L
Description: Doming And Faulting Produced By The Alpine Gulch Stock. Numerous Small Rhyolite Dikes.
Alterations
Alteration Type: L
Alteration Text: Oxidation, Kaolinization
Rocks
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Mississippian
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Gangue: Pyrite
Comments
Comment (Workings): MINE IS DEVELOPED BY A 1650-FOOT MAIN HAULAGE TUNNEL, THE 1700-FOOT STANDBY CROSSCUT, A 185-FOOT WINZE BELOW THE HAULAGE LEVEL, AND NUMEROUS SMALL ADITS, INCLINES AND SHAFTS. SEVERAL THOUSAND FEET OF CROSSCUTS AND RAISES PROSPECT THE ORE ZONE. SEVERAL THOUSAND FEET OF STOPED GROUND, UP TO 90 FEET HIGH AND 300 FEET WIDE, AND SEVERAL OPEN PITS EXTEND ALONG THE STRIKE OF THE ORE BODIES.
Comment (Geology): THE MINERALIZATION HAS OCCURRED BELOW THE RHYOLITE DIKE PRODUCING LARGE BODIES OF LOW GRADE ORE. REPLACEMENT OF LIMESTONE HAS PREDOMINATED, WITH LESSER AMOUNTS OF BRECCIA AND KIBBY SANDSTONE BEING REPLACED.
Comment (Commodity): NO GOLD OR SILVER BEARING MINERALS HAVE BEEN RECOGNIZED, BUT IT HAS BEEN POSTULATED THAT THE GOLD IS IN THE FORM OF A FINELY DISSEMINATED TELLURIDE OR CONTAINED IN AURIFEROUS PYRITE.
Comment (Reserve-Resource): 1. LARGE AMOUNTS OF BLACK OR UNOXIDIZED ORE ARE REPORTEDLY PRESENT AT DEPTH. 2. THIS IS REPORTED AS OXIDIZED ORE LEFT AS PILLARS IN THE OLD STOPES.
Comment (Deposit): THE OXIDIZED ORE IS EASILY TREATED BY CYANIDATION, BUT UNOXIDIZED ORE MUST BE TREATED IN THE ROASTING CIRCUIT TO RECOVER THE GOLD WITH THE CYANIDE PROCESS.
Comment (Deposit): Merged data from Deposit ID 10148604 (Giltedge)
References
Reference (Production): FORREST, 1971; USBM INF. CIRC. 7544
Reference (Deposit): ROBERTSON, A. F., 1950, MINES AND MINERAL DEPOSITS, FERGUS COUNTY, MONT.: U. S. BUREAU OF MINES INF. CIRC. 7544
Reference (Deposit): FORREST, R. A., 1971, GEOLOGY AND MINERAL DEPOSITS OF THE WARM SPRINGS - GILT EDGE DISTRICT, FERGUS COUNTY, MONTANA M. S. THESIS MONTANA TECH, BUTTE MONTANA
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.
