Tags: Chemical Substance, Mineral.
Charoite (K(Ca;Na)2Si4O10(OH;F)·H2O) is a rare silicate mineral first described in 1978 and named for the Chara River. It has been reported only from the Sakha Republic Yakutia Siberia Russia. It is found where a syenite of the Murunskii Massif has intruded into and altered limestone deposits producing a potassium feldspar metasomatite.Charoite is translucent lavender to purple in color with a pearly lustre. Charoite is strictly massive in nature and fractures are conchoidal.
