Bertha Mine

The Bertha Mine is a copper and silver mine located in Jefferson county, Montana at an elevation of 4,764 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

Name: Bertha Mine  

State:  Montana

County:  Jefferson

Elevation: 4,764 Feet (1,452 Meters)

Primary Mineral: Copper, Silver

Lat, Long: 46.38028, -112.08722

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 Bertha Mine

Bertha Mine MRDS details

Site Name

Primary: Bertha Mine
Secondary: Bertha Group


Commodity

Primary: Copper
Primary: Silver
Secondary: Lead
Secondary: Gold
Secondary: Zinc
Tertiary: Bismuth
Tertiary: Antimony


Location

State: Montana
County: Jefferson
District: Colorado (Corbin-Wickes) District


Land Status

Not available


Holdings

Not available


Workings

Type: Underground


Ownership

Owner Name: Glenore Mines, Inc.


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year Last Production: 1917
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

Form: IRREGULAR


Structure

Type: R
Description: Boulder Batholith


Alterations

Alteration Type: L
Alteration Text: Sericitization, Oxidation, Some Pyritization


Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cretaceous

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous


Analytical Data

Analytical Data: $0.20/TON AU
Analytical Data: 1-10 OZ/TON AG
Analytical Data: 1-5%/TON CU


Materials

Ore: Bornite
Ore: Tetrahedrite
Ore: Gold
Ore: Chalcopyrite
Gangue: Pyrite
Gangue: Quartz


Comments

Comment (Development): 11 PATENTED CLAIMS: BERTHA, BERTHA 2, DAPHNE 2, C&M, C&B, FARVIEW, JACK RABBIT, CORBIN, D&E, HELENA, BOSTON FRACTION, JEFFERS. ; ECON.COM: MILL OPERATED AT MINE DURING 1907-1918 PERIOD

Comment (Workings): TWO SHAFTS, FIVE LEVELS, CROSSCUTS. SHAFT COLLAR IS 300FT BELOW SURFACE DISCOVERY OF THE MAIN VEIN. 1911 CONSTRUCTION WAS STARTED ON A 100-TON FLOATATION PLANT TO SUPPLEMENT A 200-TON GRAVITY CONCENTRATOR. 1917 FIRE DISTROYED THE CONCENTRATOR.

Comment (Geology): VEIN OXIDIZED TO DEPTHS OF 40 TO 100 FEET . MUCH POSTMINERAL MOVEMENT HAS OCCURED.

Comment (Location): NE SLOPE OF ALTA MT.

Comment (Production): PRODUCED CONTINUOUSLY FROM 1906-1918 EXCEPT 1910.


References

Reference (Deposit): MBMG BULL 16, P. 47-9.

Reference (Deposit): USGS BULL 842, P. 242.

Reference (Deposit): USGS BULL 527 P. 110-11.

Reference (Deposit): USGS PP 428, P. 78.

Reference (Production): MBMG BULL 16, P. 47


Colorized Mining Photos

Drumlummon Mine at Marysville, Montana late 1880s

Western Mining History's collection of colorized mining photos includes incredible scenes from Montana: Best Historical Photos: Colorized Mining Scenes.