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Kogarkoite
Kogarkoite [Na3(SO4)F] is a mineral with a usually 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 scientist Lia Nikolaevna Kogarko who discovered this mineral.
- Lia Nikolaevna Kogarko (http://www.icp.ac.ru/RAS_1724-1999/CD_PAH/ENG/34/3442.HTM)
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