¡Interferencia de bloqueo de anuncios detectada!
Wikia es un sitio libre de uso que hace dinero de la publicidad. Contamos con una experiencia modificada para los visitantes que utilizan el bloqueo de anuncios
Wikia no es accesible si se han hecho aún más modificaciones. Si se quita el bloqueador de anuncios personalizado, la página cargará como se esperaba.
Sekaninaite ((Fe+2,Mg)2Al4Si5O18) is a mineral which has historically been known to occur only in one locality - in Dolni Bory in Moravia. Until 1968 it was mistaken for cordierite. It was named after a Czech mineralogist, Josef Sekanina. Next to Brazilianite and Bukovskyite, Sekaninaite is probably the only other newly discovered mineral, which appears in fairly substansial quantities and therefore has great interest for collectors.
It appears in the form of imperfect, large crystals and in coarsely granular or compact aggregates of a violet or grey-blue colour, which tend to turn green or yellow through the effects of weathering. Like Cordierite, Sekaninaite too alters into different types of mica, chiefly into Muscovite. Some forms used to be described misleadingly as pinite (after the deposit of Cordierite pseudomorphs from the Pini mine near Schneeberg in Germany) or as Gigantolite (because it forms pseudomorphs after the gigantic crystals of Cordierite). Similar pseudomorphs occur in several localities in the Czech Republic, particularly near Jihlava and by Dylen in the Bohemian Forest. But they are altered to such a degree that it is impossible to determine whether Sekaninaite or Cordierite was the original material.