The Gregory is a lead and zinc mine located in Jefferson county, Montana at an elevation of 5,561 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: 5,561 Feet (1,695 Meters)
Commodity: Lead, Zinc
Lat, Long: 46.3897, -112.11470
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.
Gregory MRDS details
Site Name
Primary: Gregory
Commodity
Primary: Lead
Primary: Zinc
Secondary: Silver
Tertiary: Gold
Location
State: Montana
County: Jefferson
District: Colorado
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
Type: Patented
Workings
Not available
Ownership
Owner Name: Montana Tunnels Mining Inc. (Pegasus Gold Inc) (Undg.)
Info Year: 1998
Owner Name: Idora Silver Mines Inc. (Leases The Dumps)
Home Office: Montana
Info Year: 1998
Owner Name: Helena Silver Mines, Inc.
Percent: 100.0
Home Office: Montana
Info Year: 1998
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: 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
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Unknown: Sphalerite
Unknown: Quartz
Unknown: Pyrite
Unknown: Galena
Unknown: Chalcopyrite
Unknown: Arsenopyrite
Comments
Comment (Environmental Factors): EROSION OF WASTE ROCK AND TAILINGS INTO DRAINAGES WAS OCCURRING. AN OBSERVED RELEASE TO CLANCY CREEK WAS DOCUMENTED FOR LEAD. OBSERVED RELEASES TO THE UNNAMED TRIBUTARY OF CLANCY CREEK WERE DOCUMENTED FOR ARSENIC AND LEAD. THE MAXIMUM CONTAMINANT LEVEL FOR CADMIUM WAS ALSO EXCEEDED IN THIS TRIBUTARY; HOWEVER, THE EXCEEDANCE COULD NOT BE ATTRIBUTED TO THE SITE. THE UNNAMED TRIBUTARY MADE UP LESS THAN 5 PERCENT OF THE FLOW OF CLANCY CREEK AT THIS LOCATION.
Comment (Reserve-Resource): AU, AG, PB VALUES FROM MBMG BULL 16, P.50-51.(PROD. STATS.) ZN EST. BY EVALUATOR, RES. QUANT. EST. BY EVALUATOR
References
Reference (Deposit): U.S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 428, P. 71-72.
Reference (Deposit): U.S. GEOLOGICAL SURVEY BULLETIN 842, 1933, P. 245.
Reference (Deposit): P. 50-51.
Reference (Deposit): MONTANA BUREAU OF MINES & GEOLOGY BULLETIN 16, 1960,
Reference (Deposit): MONTANA BUREAU OF MINES & GEOLOGY MEMOIR 31, 1950, P. 40.
Reference (Deposit): MONTANA BUREAU OF MINES & GEOLOGY IC 20, 1957, P. 21.
Reference (Deposit): PRIORITY SITES, SUMMARY REPORT, MARCH 1994, P. 5-100.
Reference (Deposit): MONTANA DEPARTMENT OF STATE LANDS. ABANDONED HARDROCK MINES
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.
