Keywords: Pimelit 1.jpg Mineral pimelite chemical composition Ni<sub>3</sub>Si<sub>4</sub>O<sub>10</sub> OH <sub>2</sub> 4H<sub>2</sub>O from collection of National Museum Prague Czech Republic originally from Poland Minerál pimelit ze sbírek Národního muzea v Praze původem z Polska own Karelj 2008-04-20 Pimelite Geological and mineralogical Exhibition NM Prague |