Blue Bird Mine

Jefferson County, Montana, United States

GoldSilverLeadZincCopperArsenicAntimony

⌖ Show on map USGS source ↗

Commodities

PrimaryGold, Silver

SecondaryLead, Zinc, Copper

TertiaryArsenic, Antimony

Commodity typeM

Deposit

Deposit sizeS

WorkingsSurface

Orebody formIRREGULAR SHOOTS

Ore controlAlong The Brecciated And Tourmalized Contact Between Shale And Granite Dike.

Materials

Ore mineralsBornite, Galena, Gold, Malachite, Sphalerite, Tetrahedrite

GangueAnglesite, Calcite, Pyrite, Quartz, Rhodochrosite, Tourmaline

Geology

Host rockQuartz Monzonite,Tuff

Associated rockQuartz Monzonite,Tuff,Quartz Latite · Elkhorn Mountain Volcanics;Butte Quartz Monzonite

StructureBoulder Batholith, South-Trending Syncline In Elkhorn Mountains Volcanics, Bluebird - Mount Washington Shear Zone About 4 Km Long, Roof Pendant Of Elkhorn Mountains Volcanics

Tectonic settingCordilleran Miogeosyncline

AlterationPyritization, Sericitization

Economic & production

Development statusPast Producer

First production1887

Last production1957

Discovery year1887

Identification

Deposit ID10071325

MRDS IDW014656

Alternate namesPen Yan Mine

RegionNA

Data scoreB

Coordinates46.35879, -112.16699

References

MBMG BULL 30, P. 24.USGS PP 428, P. 72-73.MBMG BULL 16, P. 49.MBMG BULL 10, P. 25.USGS BULL 527, P. 50-51, 111-14.USGS BULL 842, P. 242-43.MBMG BULL. 16