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38H2O Isometrik I2 3 Parthéite Ca2(Si4Al4)O15(OH)2 · 4H2O Monoklin B2/b Perlialite K9Na(Ca,Sr)[Al2Si4O12]6 · 15H2O Heksagonal P6/mmm Pollucite (Cs,Na)2(Al2Si4O12)...