The Ruby Gulch Group is a gold and silver mine located in Phillips county, Montana at an elevation of 4,780 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
Elevation: 4,780 Feet (1,457 Meters)
Commodity: Gold, Silver
Lat, Long: 47.93139, -108.55556
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.
Ruby Gulch Group MRDS details
Site Name
Primary: Ruby Gulch Group
Secondary: Ruby
Secondary: Mint
Secondary: Badger
Secondary: Alabama
Secondary: Independent
Commodity
Primary: Gold
Primary: Silver
Tertiary: Fluorine-Fluorite
Location
State: Montana
County: Phillips
District: Little Rockies District
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Gold Reserve Mining,
Home Office: C/O H. Kolstad Estate Chester, Montana
Owner Name: Placer Amax,
Home Office: Gatlin Prof. Bldg., Spokane, Wa 99208
Production
Year: 1950
Time Period: 1900 - 1950
Material type: AU
Description: Cp_Grade: ^About 0.1 Toz/St
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1903
Discovery Year: 1897
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Interior Plains
Physiographic Province: Great Plains Province
Physiographic Section: Missouri Plateau, Unglaciated
Physiographic Detail: Little Rocky Mountains
Mineral Deposit Model
Not available
Orebody
Form: SHOOTS
Structure
Type: R
Description: Little Rocky Mts. - Domal Uplift Formed By Underlying Intrusions Of Tert. Syenite Porphyry
Type: L
Description: A Group Of High Angle Gravity Faults Radiate From Dome'S Center In The Porphyry
Alterations
Alteration Type: L
Alteration Text: Sericitization
Rocks
Name: Syenite
Role: Associated
Age Type: Host Rock
Age Young: Pliocene
Name: Syenite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Syenite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Gold
Gangue: Fluorite
Gangue: Quartz
Gangue: Sericite
Comments
Comment (Deposit): Discovery Year: LATE 1890'S
Comment (Location): U.T.M. COORDINATES TAKEN ON RUBY MINE
Comment (Production): PRODUCTION FIGURES FROM TOTAL DISTRICT - MAJORITY OF PRODUCTION FROM ABOUT A HALF DOZEN MAJOR MINES. PRODUCTION YEARS ABOUT 1900 - 1923 , 1937 - 1950
Comment (Workings): PRINCIPAL BODY WORKED OVER 500 VERTICAL FEET. MINES OF THE GROUP NOT INTERCONNECTED BUT ON SAME VEIN SYSTEM. PROPERTY UNDER NEW DEVELOPMENT AS OF 1974.
References
Reference (Deposit): DYSON, J. L., 1953, RUBY GULCH GOLD MINING DISTRICT: IN BILLINGS GEOL. SOC. 4TH ANN. FIELD CONF., SEPT. 1953, LITTLE ROCKY MTS. MT, AND S.W. SASKATCHEWAN.
Reference (Deposit): EMMONS, W. H., 1908, GOLD DEPOSITS OF THE LITTLE ROCKY MTNS, MONTANA, U.S. GEOLOGICAL SURVEY BULL. 340.
Reference (Production): HUBBARD ET AL, 1964, U.S.B.M. INF. CIRC. 8229., MBMG MEM. 31
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.
