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barsanovite

A trigonal mineral, Na4(Ca,Ce)2(Fe,Mn,Y)ZrSi8O22(OH,Cl)2(?) ; weakly radioactive; in nepheline syenite and granite, commonly associated with arfvedsonite, sodalite, feldspar, aegirine, catapleiite, and astrophyllite. Compare: eucolite

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  • ed.young
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