Rock 365 : Day 320 : Eudialyte Syenite

20101116

Day 320 : This is a eudialyte syenite. Eudialyte is a rare red-purple
cyclosilicate whose name means “readily decomposible” as it disolves
easily in acids. This sample from Norra Kärr, Gränna, Jönköping,
Småland, Sweden. Keele collection.

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