The Jahnke Mine is a silver, lead, and copper mine located in Beaverhead county, Montana at an elevation of 8,780 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: 8,780 Feet (2,676 Meters)
Commodity: Silver, Lead, Copper
Lat, Long: 45.18917, -113.58694
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.
Jahnke Mine MRDS details
Site Name
Primary: Jahnke Mine
Secondary: Montana Oreway
Secondary: Straight Tip
Commodity
Primary: Silver
Primary: Lead
Primary: Copper
Secondary: Gold
Secondary: Tungsten
Location
State: Montana
County: Beaverhead
District: Beaverhead Range
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
Not available
Workings
Type: Underground
Ownership
Owner Name: John L. Rankine
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Discovery Year: 1892
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: Beaverhead Mountains
Mineral Deposit Model
Not available
Orebody
Form: QUARTZ STRINGERS
Structure
Type: L
Description: Sill, As Much As 100-Ft. Wide
Alterations
Not available
Rocks
Name: Diorite
Role: Associated
Age Type: Host Rock Unit
Age Young: Neoproterozoic
Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Gold
Ore: Scheelite
Ore: Copper
Ore: Malachite
Ore: Bornite
Ore: Chalcopyrite
Ore: Cuprite
Ore: Galena
Gangue: Chlorite
Gangue: Epidote
Gangue: Quartz
Gangue: Magnetite
Gangue: Tourmaline
Gangue: Hematite
Gangue: Calcite
Comments
Comment (Production): FIGURES REFER TO A MINE CALLED STRAIGHT TIP. GEACH ASSUMES STRAIGHT TIP MINE IS THE JANKE.
Comment (Deposit): BEST ORE EXPOSURES OCCUR NEAR MOUNTAIN CREST, WHERE SEVERAL VEINS PARALLEL BEDDING AND INTERSECT VERTICAL VEINS.
Comment (Workings): 3064-FT ADIT DRIVEN IN 1909 FAILED TO INTERSECT VEIN. TWO INCLINED SHAFTS, 50 AND 150-FT. LONG, EXPLORED VEINS IN 1940-41.
Comment (Deposit): Discovery Year: EARLY 1890'S
Comment (Geology): DEPOSIT IN DIORITE SILL IN QUARTZITE.
Comment (Deposit): PROPERTY CONSISTS OF 5 PATENTED CLAIMS; THE GOOD HOPE, WABASH, MT. VERNON, RANGER, AND POTOMAC. ; INFO.SRC : 1 PUB LIT
References
Reference (Deposit): MBMG BULL 85.
Reference (Deposit): USBM RI 6334
Reference (Deposit): USGS BULL 574, P. 77.
Reference (Deposit): SASSMAN, O., 1941 MA THESIS, MT STATE UNIV., P. 280
Reference (Deposit): 1914 RECON WINCHELL, A.N., U.S.G.S. BULL. 574
Reference (Deposit): 1972 COMPILE M.B.M.G. BULL. 85
Reference (Production): GEACH, 1972, MBMG BULL. 85.
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.
