Reznitskyite

reznitskyite

tilasite

isokite

udinaite

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Formula: CaMg(VO4)F
Vanadate, tilasite group
Specific gravity: 3.453 calculated
Colour: Colourless
Environments

Fumeroles

Reznitskyite is a new mineral, approved in 2021 and to date (June 2022) reported only from the type locality.

Localities

At the type locality, the Arsenatnaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik volcano, Kamchatka Krai, Russia, reznitskyite occurs as zones, usually up to 0.05 mm thick, in crystals of vanadium- and phosphorus-containing tilasite or as homogeneous grains up to 0.1 mm across. It was found in polymineralic sublimate encrustations in association with minerals of the svabitefluorapatitepliniusite system and the schäferiteberzeliite, tilasiteisokite, wagneritearsenowagnerite and udinaitearsenudinaite series. The mineral assemblage also includes calciojohillerite, diopside, forsterite, titanite, rhabdoborite-(V), rhabdoborite-(W), rhabdoborite-(Mo), ludwigite, powellite, scheelite, hematite, baryte and magnesioferrite (MM 86.2.307-313).

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