Tiny pearly white crystals of krasnoite on brown triplite. Ex Jaroslav Hyrsl specimen. Field of view 3 mm. From: Huber stock, Krásno, Horní Slavkov, Sokolov District, Karlovy Vary Region, Czech Republic. — Photo: Leon Hupperichs · CC BY-SA 3.0
Krásnoite
Krásnoite is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₃Al₇.₇Si₃P₄O₂₂.₉(OH)₁₃.₃F₂·8H₂O.
It crystallizes in the hexagonal crystal system (space group P-3m1). It is a member of the Perhamite structural group.
IMA symbol Krá, IMA status: approved, named in 2011.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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