(Drahany, Okres Prostějov, Olomoucký Kraj)
Southern part of the Moravo-Silesian Culm Basin cut by hydrothermal veins.
Ref.:
Škoda, R. & Čopjakova, R. (2006): Authigenic REE mineralsfrom greywackes of the Drahany Uplands, Czech Republic and their significance for diagenetic processes. Mineralogia Polonica, 28, 208-210.