tegutseva

Tegutseva is a rare and unique mineral that was first discovered in the late 19th century in the Kola Peninsula of Russia. It is named after the Russian mineralogist, Lev Ivanovich Tegutsev, who made significant contributions to the study of minerals and their properties. Tegutseva is a complex oxide mineral with the chemical formula (Na,Ca)2(Fe,Mn)3Ti2O8. It is typically found in association with other minerals such as aegirine, riebeckite, and magnetite.

The mineral is characterized by its dark brown to black color, metallic luster, and a hardness of approximately 5.5 on the Mohs scale. Tegutseva crystals are usually small and prismatic, often forming in aggregates or masses. It is an important mineral in the study of petrology and geochemistry, as it provides insights into the conditions under which it formed and the processes that occurred in its host rocks.

Tegutseva is relatively rare and is not commonly found in mineral collections. Its occurrence is limited to a few specific locations worldwide, including the type locality in the Kola Peninsula and a few other sites in Russia and Canada. The mineral's rarity and unique properties make it a subject of interest for geologists and mineralogists, who continue to study its formation and significance in geological processes.