Keywords: Chiastolith 1.jpg Mineral chiastolite chemical composition Al<sub>2</sub>SiO<sub>5</sub> from collection of National Museum Prague Czech Republic originally from Australia Minerál chiastolit odrůda w Andalusit andalusitu cs ze sbírek Národního muzea v Praze původem z Austrálie own Karelj 2008-04-20 Chiastolite Geological and mineralogical Exhibition NM Prague |