Acta Musei Moraviae

Laumontite from the Sobotín-Štětínov (Moravia, Czech Republic)

Sobotín-Štětínov (also Kožušná or Fellberg) is classic Moravian locality of low-temperature hydrothermal fissure alpine-type mineralization. Most prominent zeolite finds came from the end of 19^th and the beginning of the 20^th century, when two quarries were active in the rocks of the Sobotín Massif. Laumontite find was mentioned in 1965, but questioned by later authors. New find comming from the eastren of those two quarries proved presence of above mentioned mineral, forming aggregates of white pseudo-tetragonal crystals up to 6 mm. It is accompanied by minor albite, actinolite, calcite, and quartz. Powder-XRD data are closer to partially dehydrated laumontite than to fully hydrated one.