Oskarssonite
Oskarssonite is an IMA-recognized mineral species in the halide class, with the chemical formula AlF₃.
It crystallizes in the hexagonal crystal system (space group R-3c). It is a member of the Perovskite structural group.
Key properties: specific gravity 3.184; optically uniaxial.
IMA symbol Osk, IMA status: approved, named in 2012.
Occurs as sublimate encrustations deposited at 90 flC close to the surface of fumarole vents.
It is found associated with Anhydrite, bassanite, gypsum, jarosite, anatase, hematite, opal, ralstonite, jacobssonite, meniaylovite.
The mineral was named to honor Niels Oskarsson (b. 1944), a prominent Icelandic volcanologist, in recognition of his work on Icelandic fumaroles.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
Browse more O minerals or help write this entry.