Hydroxylapatit z Medvědí jeskyně u Horního Maršova v Krkonoších (Česká republika)
Ferry Fediuk, Ivana Jebavá, Radko Tásler, Petr Pauliš
Hydroxylapatite was found in the Medvědí cave near Horní Maršov in Krkonoše Mountains (Czech Republic). It was identified as part of the stalactite fragments, where it forms upper, grey-brown finely paralelly folded compact increment layer 1 - 2 mm thick. The unit cell parameters of hydroxylapatite, refined from powder X-ray data, are a 9.427(9) Å, c 6.8736(4) Å and V 529.0(5) Å3.