Tags: Chemical Substance, Mineral.

Kogarkoite is a sodium sulfate fluoride mineral with formula Na3(SO4)F. It has a pale blue color. The specific gravity is about 2.67 and the hardness is 3.5. The crystall system is monoclinic. Kogarkoite is named after the Russian petrologist Lia Nikolaevna Kogarko (born 1936) who discovered the mineral.

Kogarkoite_-_Poudrette_quarry_Mont_Saint-Hilaire_Quebec_Canada.jpg

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