Villiaumite

Villiaumite is hard to pronounce and must be handled with care. It is a sodium fluoride halide and is toxic. It also is water soluble. Wash your hands after handling, but NOT the rock! These are typically cleavages of much larger ill defined crystals. Fabulous color intensity and supremely showy.

Locality: Kirovskii Apatite Mine, Kukisvumchorr Mountain, Khibiny Massif, Kola Peninsula, Russia

Composition: sodium fluoride halide