Yegorovite


Yegorovite, is a silicate mineral found in a hyperalkaline
pegmatite in the Lovozero Pluton at Mt. Kedykverpakhk in the Kola Peninsula of Russia. It was named in memory of Russian crystallographer Yurii Kavdievich Yegorov-Tismenko, and approved by the Commission on New Minerals and Mineral Names, International Mineralogical Association in 2008.

Physical properties

Yegorovite is colorless, with a white streak. Found in small quantities among pegmatites. It is a natural silicate of alkali cations.

Chemical composition

The chemical composition of yegorovite in elemental weight percent is as follows:
elementweight %
Na2O23.28
SiO245.45
H2O31.27
Total100.0

Crystal structure

The crystal structure of yegorovite is made up of a single chain of four silicon tetrahedrons ∞ and sixfold polyhedrons of and centered by sodium.