Commodities
PrimaryGold, Silver
TertiaryFluorine-Fluorite
Commodity typeB
Deposit
Deposit sizeY
WorkingsSurface/Underground
Orebody formSHOOTS
Ore controlOre Confined To Narrow Crushed Zones Between Faults
Materials
Ore mineralsGold, Pyrite
GangueFluorite, Quartz, Sericite
Geology
Host rockSyenite · Deadwood Formation, Limestone & Shales;Gneisses And Schists
Associated rockSyenite · Syenite Porphyry Laccolith
StructureLittle Rocky Mts. - Domal Uplift Formed By Underlying Intrusions Of Tert. Syenite Porphyry, A Group Of High Angle Gravity Faults Radiate From Dome'S Center In The Porphyry
Tectonic settingRocky Mountain Foreland
AlterationSericitization
Economic & production
Development statusProducer
First production1903
Discovery year1897
Identification
Deposit ID10071371
MRDS IDW014713
Alternate namesRuby, Mint, Badger, Alabama, Independent
RegionNA
Data scoreB
Coordinates47.93132, -108.55634
References
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.EMMONS, W. H., 1908, GOLD DEPOSITS OF THE LITTLE ROCKY MTNS, MONTANA, U.S. GEOLOGICAL SURVEY BULL. 340.HUBBARD ET AL, 1964, U.S.B.M. INF. CIRC. 8229., MBMG MEM. 31