The Rimini is a silver and gold mine located in Lewis and Clark county, Montana.
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
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.
Rimini MRDS details
Site Name
Primary: Rimini
Commodity
Primary: Silver
Primary: Gold
Secondary: Lead
Secondary: Zinc
Secondary: Copper
Location
State: Montana
County: Lewis and Clark
District: Rimini (Vaughn)
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Year: 1950
Time Period: 1865-1950
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein, Polymetallic
Operation Type: Unknown
Year First Production: 1865
Year Last Production: 1950
Discovery Year: 1864
Years of Production:
Organization:
Significant: Y
Physiography
Not available
Mineral Deposit Model
Model Name: Polymetallic veins
Orebody
Not available
Structure
Type: L
Structure: RED MOUNTAIN FAULT, LEE MOUNTAIN-VALLEY FORGE SHEAR ZONE
Type: R
Structure: Boulder Batholith
Alterations
Alteration Type: L
Alteration: TOURMALINIZATION, SERICITIZATION
Rocks
Name: Rhyolite
Role: Host
Description: RHYOLITE FLOWS
Age Type: Host Rock Unit
Age Young: Cretaceous
Analytical Data
Not available
Materials
Ore: Gold
Ore: Galena
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Tetrahedrite
Comments
Comment (Deposit): 3 PERIODS OF MINERALIZATION: THE OLDER (LATE CRET) AND MORE PRODUCTIVE ORE BODIES ARE AURIFEROUS SILVER-LEAD VEINS IN TOURMALINIZED AND SERICITIZED QUARTZ MONZONITE IN THE UPPER PART OF THE BATHOLITH. THE TERTIARY DEPOSITS ARE LOW GRADE AND CONSIST OF ALTERED RHYOLITE IMPREGNATED WITH AU ALONG SMALL FRACTURES. IN SEVERAL MINE DUMPS RADIOACTIVE MATERIAL HAS BEEN FOUND
Comment (Geology): MORE THAN 100 QUARTZ VEINS ARE KNOWN IN THE DISTRICT. ALL THE VEINS ON THE W SIDE OF RED MOUNTAIN EXTEND NORTHWARD TO LEE MOUNTAIN-VALLEY FORGE ZONE. THE LEE MOUNTAIN-VALLEY FORGE SHEAR ZONE TRENDS N50-60E AND DIPS STEEPLY. IT CONSISTS OF FAULTS, VEINS, AND ALTERED ROCK ACROSS A WIDTH OF A FEW HUNDRED FEET, AND IT IS ABOUT 5 MILES LONG
References
Reference (Deposit): USGS BULL 842, P. 246-49
Reference (Deposit): USGS PP 428, P. 54-5
Reference (Deposit): USGS BULL 527, P. 80-2
Reference (Deposit): USGS PP 610, P. 157-58
Reference (Deposit): USGS BULL 1151, P. 88-92.
Reference (Production): Pardee and Schrader,1933
Reference (Production): Becraft and others, 1963
Reference (Reserve-Resource): Avery and others, 1989
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.
