Specific gravity: 3.51
Colour: Colourless to pale yellow
Solubility: Decomposes slowly in dilute hydrochloric acid, leaving a white residue Dana
Common impurities: Al,Mn,Zn
Pellyite occurs in lenses and bands of barium silicate rocks developed
in metamorphic skarn near the contact with
granite or granodiorite.
Associated minerals include baryte,
witherite and andradite
At the type locality, the Gun claim, Wilson Lake, Itsi Mountain, Watson Lake mining district, Yukon, Canada, pellyite occurs in a contact metasomatic deposit adjacent to a porphyritic quartz monzonite stock. It occurs as a massive crystalline constituent of skarns which have developed in original limestone bodies adjacent to the igneous contact. The average grain size of the pellyite is approximately 2 mm. The mineral assemblage includes pellyite, baryte, hedenbergite, quartz, andradite, taramellite, gillespite, sanbornite, chalcopyrite and witherite (CM 11.444-447).
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