Bøgvadite
Bøgvadite is an IMA-recognized mineral species in the halide class, with the chemical formula Na₂Ba₂SrAl₄F₂₀.
It crystallizes in the monoclinic crystal system (space group P2_1/n).
Key properties: Mohs hardness 3; specific gravity 3.85; White streak; Vitreous luster; optically biaxial.
IMA symbol Bgv, IMA status: approved, named in 1987.
Found in the cryolite deposit.
It is found associated with Jarlite, ralstonite, barite, potassian mica, quartz, a kaolinlike mineral.
The name refers to Richard Bøgvad (1897–1952), formerly Chief Geologist for the company Øresund A/S, which mined the Ivigtut cryolite deposit.
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 B minerals or help write this entry.