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Formula:Na2Ba2SrAl4F20
Halide, barium- and strontium-
bearing mineral
Crystal System: Monoclinic
Specific gravity: 3.85 measured, 3.898 calculated
Hardness: 4
Streak: White
Colour: Colourless
Luminescence: Nonfluorescent under UV
Environments
Bøgvadite was approved in 1987 but to date (November 2022) it has been reported only from the type locality.
Localities
At the type locality, the Ivigtut mine, Arsuk Fjord, Sermersooq, Greenland, bøgvadite occurs in the
cryolite deposit as blocky crystals to 0.15 mm, with rounded and corroded
faces. Associated minerals include jarlite,
hydrokenoralstonite, baryte,
mica and quartz
(AM 76.1728-1735).
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