Yurgensonite

yurgensonite

katiarsite

badalovite

pansnerite

Images

Formula: K2SnTiO2(AsO4)2
Arsenate, tin and titanium bearing mineral
Specific gravity: 3.877 calculated
Streak: White
Colour: Colourless, white or pale beige
Environments

Fumeroles

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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