The Shamrock Mine is a gold and silver mine located in Sanders county, Montana at an elevation of 3,399 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: 3,399 Feet (1,036 Meters)
Commodity: Gold, Silver
Lat, Long: 47.55278, -115.50889
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.
Shamrock Mine MRDS details
Site Name
Primary: Shamrock Mine
Commodity
Primary: Gold
Primary: Silver
Secondary: Lead
Location
State: Montana
County: Sanders
District: Prospect Creek 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
Type: Underground
Ownership
Owner Name: Florence Mine And Developing Co.
Production
Year: 1908
Material type: ORE
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1908
Discovery Year: 1900
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: N - S Trending Anticline
Alterations
Not available
Rocks
Name: Quartzite
Role: Host
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Quartzite
Role: Host
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Analytical Data: 1961 ASSAY OF SELECTED DUMP QUARTZ REVEALED A CONTENT OF 0.04 OZ/TON AU AND 2.51 OZ/TON AG
Materials
Gangue: Quartz
Comments
Comment (Development): NO REPORTS ON DEVELOPMENT AFTER 1912 CAN BE FOUND. 1908 PUBLICATION STATES THAT THERE WERE 11 CLAIMS. ; ECON.COM: 5 STAMP MILL ERECTED IN 1908 .
Comment (Deposit): DUMPS CONTAINED A FEW SCATTERED PIECES OF IRON-STAINED QUARTZ, BUT NO SULFIDE MINERALS COULD BE SEEN.
Comment (Workings): 1908 PUBLICATION STATES THAT THERE WERE THREE TUNNELS, 285 FT, 1116 FT & 1812 FT IN LENGTH. AS OF 1961 ALL WORKINGS WERE CAVED.
Comment (Location): ON A RIDGE WEST OF SHAMROCK GULCH. A TRIBUTARY GULCH TO PROSPECT CREEK.
References
Reference (Analytical Data): SRC.REF: CROWLEY, F. A., 1963 : MONTANA BUREAU OF MINES AND GEOLOGY BULL. 34 , P. 34 - 35
Reference (Deposit): CROWLEY, F. A., 1963 , MINES AND MINERAL DEPOSITS (EXCEPT FUELS) SANDERS COUNTY, MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY, BULL. 34 , PP. 34 - 35
Reference (Production): CROWLEY, F. A., 1963 : MONTANA BUREAU OF MINES AND GEOLOGY BULL. 34 , P. 34 .
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.
