Category Phosphate mineral Strunz classification 8.BA.05 Space group P21/a | Formula(repeating unit) MnBe(PO4)(OH,F) Crystal system Monoclinic | |
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Crystal class Prismatic (2/m)(same H-M symbol) | ||
Väyrynenite is a rare phosphate mineral with formula MnBe(PO4)(OH,F). It was first described in 1954 for an occurrence in Viitaniemi, Erajarvi, Finland and named for mineralogist Heikki Allan Väyrynen of Helsinki, Finland.
It is occurs in pegmatitess as an alteration of beryl and triphylite. It occurs in association with eosphorite, moraesite, hurlbutite, beryllonite, amblygonite, apatite, tourmaline, topaz, muscovite, microcline and quartz.
References
Väyrynenite Wikipedia(Text) CC BY-SA