Dutro Mine

The Dutro Mine is a 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: Dutro Mine  

State:  Montana

County:  Lewis and Clark

Elevation:

Primary Mineral: Gold

Lat, Long: 46.5925, -112.16056

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 Dutro Mine

Dutro Mine MRDS details

Site Name

Primary: Dutro Mine
Secondary: Old Dominion


Commodity

Primary: Gold
Tertiary: Bismuth
Tertiary: Tin


Location

State: Montana
County: Lewis and Clark
District: Blue Cloud District


Land Status

Not available


Holdings

Not available


Workings

Type: Underground


Ownership

Not available


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1911
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains


Mineral Deposit Model

Not available


Orebody

Not available


Structure

Type: R
Description: Boulder Batholith

Type: L
Description: Series Of Paleozoic Limestone And Dolomite Standing On Edge Trending North-South Near End Of An Intrusion Of Fine Grained Diorite Whose Long Axis Is 1/4 Mile, And Parallels Strike Of Paleozoic Rocks


Alterations

Alteration Type: L
Alteration Text: Oxidized


Rocks

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Paleocene

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Diorite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Late Cretaceous


Analytical Data

Analytical Data: ASSAY $75/TON AU (KNOPF, 1933, U.S.G.S. BULL 527, P. 101-102)


Materials

Ore: Cassiterite
Gangue: Quartz
Gangue: Opal
Gangue: Iron
Gangue: Tremolite
Gangue: Jasper


Comments

Comment (Workings): INCLINE

Comment (Geology): SPECKS OF FREE GOLD IN ORE OF JASPERY QUARTZ, SOMETIMES CHROME-YELLOW COLOR DUE TO OXIDATION OF BISMUTH SULFIDES

Comment (Deposit): ORIGIONAL DEPOSIT CHARACTER OBSCURED BY OXIDIATION OF THE ORE


References

Reference (Deposit): USGS BULL 527, P. 101-02.

Reference (Deposit): USGS BULL 842, P. 211.