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