Cl-rich hydroxylellestadite from Zastávka near Brno
Article PDFCl-rich hydroxylellestadite from Zastávka near Brno
At burning mine dumps of abandoned mines at Zastávka near Brno (southern Moravia), Czech Republic, was found mineral from the ellestadite group – Cl-rich hydroxylellestadite. It forms rare pale blue transparent acicular crystals, up to I mm in length, and rich bright blue fine-grained aggregates, up to 1 cm in size, in fragment of burned rock. The X-ray powder diffraction pattern, unit cell parameters, chemical analysis, TG curve and infrared absorption spectrum are given.
Jiří Sejkora, Department of Mineralogy and Petrography, National Museum, Václavské nám. 68, 115 79 Prague, Czech Republic, e-mail: jiri.sejkora@nm.cz
Stanislav Houzar, Department of Mineralogy and Petrography, Moravian Museum, Zelný trh 6, 659 37 Brno, Czech Republic, e-mail: mineral@mzm.anet.cz
Vladimir Šrein, Institute for Rock Structure and Mechanics, Czech Academy of Science, V Holešovičkách 41, 18209. Prague, Czech Republic, e-mail:srein@alpha.irsm.cas.cz