Rimini

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

Name: Rimini  

State:  Montana

County:  Lewis and Clark

Elevation:

Primary Mineral: Silver, Gold

Lat, Long: 46.486, -112.24700

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.


Satelite image of the Rimini

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