Mine detail: Ruby Gulch Group

Previously called 'RubyMintBadgerAlabamaIndependent'

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Location

Lat / long:

47.93132, -108.55634

Resource(B)

Primary:	Gold, Silver
Tertiary:	Fluorine-Fluorite
Ore:	Gold, Pyrite
Gangue:	Fluorite, Quartz, Sericite
Orebody form:	SHOOTS
Discovery year:	1897

Production

Operation type:	Unknown
Production size:	Yes
Development status:	Producer
First production started:	1903

Geology

Host rock:	Deadwood Formation, Limestone & Shales;Gneisses And Schists
Host type:	Syenite
Associated rock:	Syenite Porphyry Laccolith
Associated type:	Syenite
Structure:	Little Rocky Mts. - Domal Uplift Formed By Underlying Intrusions Of Tert. Syenite Porphyry, A Group Of High Angle Gravity Faults Radiate From Dom * Center In The Porphyry
Tectonic:	Rocky Mountain Foreland
Alteration processes:	Sericitization

References

MRDS	W014713
DEP	10071371
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.}{Deposit:: EMMONS, W. H., 1908, GOLD DEPOSITS OF THE LITTLE ROCKY MTNS, MONTANA, U.S. GEOLOGICAL SURVEY BULL. 340.}{Production:: HUBBARD ET AL, 1964, U.S.B.M. INF. CIRC. 8229., MBMG MEM. 31}
Reporter	Mlynarczyk, Meg S.