Villiaumite, Kola Peninsula, Russia

The chemical formula for villiaumite is simple enough (NaF or sodium fluoride), but it is anything but typical. Villiaumite is a rare halide mineral which normally implies an evaporitic origin, however, most collector-quality specimens actually originate from igneous rocks! For those into geology, these particular igneous rocks are also uncommon; alkaline syenites and pegmatites. The best, and most colourful material, is from the fascinating deposits in the Kola Peninsula in Russia. Our specimen is a cleave (a common occurrence) with nice size and deep saturation. An excellent example of the species but don't lick your fingers after handing it! Villiaumite is extremely water soluble with the fluorine being particularly poisonous - wash your hands! Ex Steve Potvin collection. Dimensions: 2 cm x 3.5 cm