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Formula: CaMg(VO4)F
Vanadate, tilasite group
Crystal System: Monoclinic
Specific gravity: 3.453 calculated
Colour: Colourless
Environments
Reznitskyite is a new mineral, approved in 2021 and to date (June 2023) 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-bearing
tilasite
or as homogeneous grains up to 0.1 mm across. It was found in polymineralic sublimate encrustations in association
with minerals of the svabite –
fluorapatite – pliniusite
system and the schäferite –
berzeliite,
tilasite – isokite,
wagnerite –
arsenowagnerite and
udinaite – arsenudinaite
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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