Implications of celsian in the Ruby Mountains, Elko County, Nevada

Vladimir Berger; Ted G. Theodore; Richard M. Tosdal; Robert L. Oscarson

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Implications of celsian in the Ruby Mountains, Elko County, Nevada

Vladimir Berger·Ted G. Theodore·Richard M. Tosdal·Robert L. Oscarson

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Abstract

The Ba-feldspar celsian [BaAl 2 Si 2 O 8 ] has been found in quartz-skarn-sulfide deposits at the American Beauty and Summit View Mines in the Ruby Mountains, Nevada. The celsian is present in quartz-skarn-polymetallic sulfide ores formed during Jurassic and Tertiary phases of skarn formation. Well-shaped microcrystals of celsian, along with sulfide minerals and apatite, fill cavities in quartz and are related to a retrogressive hydrothermal mineral paragenesis that took place during a final stage of contact-metamorphic mineralization at temperatures of approximately 300 ° C. Prismatic crystals of celsian were subsequently fragmented and rounded during superposed ductile deformation of the enclosing quartz and became part of a Tertiary mylonitic fabric at the American Beauty Mine.

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Vladimir Berger, Ted G. Theodore, Richard M. Tosdal, Robert L. Oscarson. 2000. Implications of celsian in the Ruby Mountains, Elko County, Nevada. https://pubs.usgs.gov/publication/70270389

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