The May Day Mine is a lead, gold, silver, and copper mine located in Beaverhead county, Montana at an elevation of 7,051 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: 7,051 Feet (2,149 Meters)
Commodity: Lead, Gold, Silver, Copper
Lat, Long: 45.31944, -112.87417
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.
May Day Mine MRDS details
Site Name
Primary: May Day Mine
Commodity
Primary: Lead
Primary: Gold
Primary: Silver
Primary: Copper
Secondary: Zinc
Location
State: Montana
County: Beaverhead
District: Argenta District
Land Status
Land ownership: National Forest
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
Not available
Ownership
Owner Name: John Thuleson
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1935
Discovery Year: 1934
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: Pioneer Mountains
Mineral Deposit Model
Not available
Orebody
Form: LENSES
Structure
Type: L
Description: Shale Trends N37e, 38 Se.
Alterations
Not available
Rocks
Name: Shale
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Shale
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Not available
Comments
Comment (Workings): PROPERTY HAS BEEN TESTED ENTIRE LENGTH BY PITS, SHAFTS AND TRENCHES. ALL SHAFTS WERE INACCESSIBLE IN 1972.
Comment (Location): CENTER OF SOUTH BORDER OF SECTION 7.
Comment (Production): PRODUCTION YEARS WERE 1935-7, 1939-42, 1947-50, AND 1961
Comment (Deposit): SHEAR ZONE IS 6 TO 12 INCHES WIDE AND IS MARKED BY GRAY TO YELLOWISH GOUGE.
References
Reference (Production): M.B.M.G. BULL. 85
Reference (Deposit): MBMG BULL 85, P. 59.
Reference (Deposit): MBMG BULL 25, P. 7.
Reference (Deposit): 1972 COMPILE M.B.M.G. BULL. 8
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.
