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Formula: K2SnTiO2(AsO4)2
Arsenate, tin and
titanium bearing mineral
Crystal System: Orthorhombic
Specific gravity: 3.877 calculated
Streak: White
Colour: Colourless, white or pale beige
Environments
Yurgensonite is a new mineral, approved in 2019 and to date (March 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, yurgensonite forms a continuous isomorphous series with
katiarsite. Yurgensonite and a
tin-bearing variety of katiarsite are
associated closely with one another, and with badalovite,
pansnerite, yurmarinite,
achyrophanite,
arsenatrotitanite, hatertite,
khrenovite, svabite,
sanidine, hematite,
cassiterite, rutile and
aphthitalite-group sulphates.
Yurgensonite occurs as sword-shaped crystals up to 0.01 mm × 0.05 mm × 1 mm or acicular to hair-like individuals up
to 1 mm long, typically forming radial aggregates up to 2 mm across
(MM 85.698-707).
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