Hope Group

The Hope Group is a silver, copper, and lead mine located in Granite county, Montana at an elevation of 5,669 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: Hope Group

State: Montana

County: Granite

Elevation: 5,669 Feet (1,728 Meters)

Commodity: Silver, Copper, Lead

Lat, Long: 46.34028, -113.27444

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 Hope Group

Hope Group MRDS details

Commodity

Primary: Silver
Primary: Copper
Primary: Lead
Secondary: Gold
Secondary: Manganese
Tertiary: Barium-Barite
Tertiary: Antimony
Tertiary: Arsenic
Tertiary: Fluorine-Fluorite

Location

State: Montana
County: Granite
District: Philipsburg (Granite-Flint Creek) District

Land Status

Not available

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Owner Name: Frank, Peter, And William Antonioli,
Home Office: 724 S. Western Ave, Butte, Mt. 59701

Owner Name: Contact Mining Co.,
Home Office: 724 S. Western Ave., Butte, Mt.

Production

Year: 1920
Time Period: 1866-1920
Mined: 181436.940 mt
Material type: Pb
Year: 1920
Time Period: 1866-1920
Mined: 1360777.110 mt
Material type: Cu
Year: 1920
Time Period: 1866-1920
Mined: 124413924.00 g
Material type: Ag
Year: 1920
Time Period: 1866-1920
Mined: 110231.100 mt
Material type: ore

Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Polymetallic Replacement
Operation Type: Unknown
Year First Production: 1866
Discovery Year: 1865
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: Y
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Northern Rocky Mountains
Physiographic Detail: Flint Creek Range

Mineral Deposit Model

Model Name: Polymetallic replacement

Orebody

Form: TABULAR

Structure

Type: R
Description: Philipsburg Batholith

Type: L
Description: Philipsburg Anticline, Philipsburg Overthrust

Alterations

Alteration Type: L
Alteration Text: Limestone Marmerized And Some Tremolite Developed.

Rocks

Name: Limestone
Role: Host
Description: MEDIUM-GRAINED SHALY MAGNESIAN LIMESTONE
Age Type: Host Rock
Age Young: Late Devonian

Name: Limestone
Role: Host
Description: MEDIUM-GRAINED SHALY MAGNESIAN LIMESTONE
Age Type: Host Rock Unit
Age Young: Late Devonian

Analytical Data

Analytical Data: 18-60 OZ/TON AG (LITTLE EMMA)

Materials

Ore: Argentite
Ore: Tetrahedrite
Ore: Galena
Ore: Gold
Ore: Chalcocite
Ore: Malachite
Ore: Cerargyrite
Gangue: Calcite
Gangue: Iron
Gangue: Fluorite
Gangue: Rhodochrosite
Gangue: Barite
Gangue: Quartz
Gangue: Pyrite

Comments

Comment (Production): PRODUCTION ESTIMATED TO BE ABOUT $4,000,000 FROM 1866-1906. SPORODIC LEASING FROM 1920-1938 WHEN ALL MINING CEASED. IN 1956-58 THE COMANCHE MINE PRODUCED MN.

Comment (Deposit): COMANCHE MINE ACTIVE 1956-58, FOR MNO2, JUBILEE WORKINGS INTERSECT ON TUNNEL LEVEL NEAR TOP OF GOLDEN GATE INCLINEAND AT WHITEWASH STATION; FIELD SHAFT INTERSECTS THE JUBILEE WORKINGS 500 FT S 73 E FROM THE TOP OF GOLDEN GATE INCLINE; CUNO SHAFT IS ABOUT 750 FT S 28 W OF THE PORTER SHAFT; TAKE ALL INCLINE IS ABOUT 200FT S 28 W OF THE HOPE DISCOVERY INCLINE; PORTER SHAFT INACCESSIBLE, PRINCE IMPERIALE SHAFT WAS USED; LITTLE EMMA IS ABOUT 700FT NE OF DISCOVERY SHAFT, NEAR TOP OF HOPE HILL; ; INFO.SRC : 1 PUB LIT

Comment (Deposit): Merged data from Deposit ID 10196506 (Hope Group)

Comment (Deposit): THE BEDS AND THE VEINS AT THE HOPE MINE STRIKE N 10-60 E AND DIP ABOUT 30 NW BUT BOTH ARE VARIABLE. SOME OF THE LARGEST ORE BODIES OCCUR ON THE CREST OF SMALL ANTICLINES OR IN THE SADDLES OF SMALL SYNCLINES. VEINS OCCUR AT SEVERAL HORIZONS AND SOME ARE CONNECTED BY THIN STRINGERS THAT PARALLEL THE W-STRIKING DEEPLY DIPPING VEINS TO THE S. THE MAJOR VEINS ARE DIVIDED INTO TWO GROUPS THAT ARE SEPARATED BY A 400-FT INTERVAL OF BARREN ROCK.

Comment (Workings): DEPOSIT CONSISTS OF TWO MAJOR VEINS, CALLED THE NORTH AND SOUTH ORE CHANNELS. NORTH CHANNEL DEVELOPED BY SHAPLEIGH, PORTER, PORTER MAIN, AND PORTER #2 SHAFTS OVER A LENGTH OF 1400 M AND WIDTH OF 30 M. SOUTH CHANNEL DEVELOPED BY SHAPLEIGH, FIELD, AND CUNO SHAFTS OVER A LENGTH OF 800 M AND A WIDTH OF 80 M. JUBILEE TUNNEL ENTERS WEST SLOPE OF HOPE HILL AT ABOUT 5500 FT ELEVATION AND HAS BEEN DRIVEN 165 M EASTWARD WHERE IT INTERSECTS THE SHAPLEIGH SHAFT WHICH IS COLLARED AT AN ELEVATION OF 5670 FT. SHAPLEIGH SHAFT IS ROUGHLY BETWEEN AND ABOUT 120 M WEST OF THE TWO NORTHEAST TRENDING ORE CHANNELS. WORKINGS HAVE BEEN INACCESSIBLE SINCE 1941 WHEN SHAPLEIGH SHAFT WAS DESTROYED BY FIRE.

Comment (Geology): MINE ON CREST AND WEST LIMB OF PHILIPSBURG ANTICLINE WHICH TRENDS ABOUT N 20 E AND PITCHES ABOUT 15 N

Comment (Reserve-Resource): DRILLING BY USBM FAILED TO PENETRATE COMMERCIAL ORE IN CAMBRIAN LIMESTONES BENEATH HOPE WORKINGS BUT THIS WAS NOT SURPRISING AS HOPE MINERALIZATION IS NOT RELATED TO STRONG EAST-WEST FISSURES BUT TO BEDDING PLANES AND POORLY DEVELOPED FRACTURES IN JEFFERSON LIMESTONE. THE FACT THAT SOME METAL VALUES WERE FOUND AT FORMATION CONTACTS INDICATES THAT THE ENTIRE PHILIPSBURG ANTICLINE HAS BEEN MINERALIZED TO SOME DEGREE. THERE IS A CHANCE THAT SOME SMALL LOW GRADE ORE BODIES MAY BE DISCOVERED TO THE NORTHEAST ALONG BROWNS CREEK BUT THESE RESOURCES WOULD NOT BE CREDITED TO THE HOPE MINE. MINERAL POTENTIAL DOWNDIP OF THE PHILIPSBURG ANTICLINE IN THE JEFFERSON LIMESTONE IS UNFAVORABLE BECAUSE NO FAULT OR FRACTURE SYSTEMS ARE MAPPED. EVEN A WEAKLY DEVELOPED FRACTURE SYSTEM, IF IT COULD BE LOCATED, WOULD GREATLY INCREASE MINERAL POTENTIAL.

Comment (Location): UTM LOCATION OF SHAPLEIGH SHAFT

References

Reference (Deposit): USGS BULL 1237, P. 30-1, PLATES

Reference (Deposit): MBMG BULL 115, P. 5.

Reference (Deposit): USBM REP INVES 4399, 9 P.

Reference (Deposit): USGS PP 78, P. 213-18, PL. 1, 2.

Reference (Deposit): USGS BULL 955-E, P. 220-21.

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.