Langban, Sweden — Photo: Pacific Museum of Earth from Canada · CC BY-SA 2.0
Caryinite
Caryinite is an IMA-recognized mineral species in the arsenate class, with the chemical formula NaCaCaMn₂(AsO₄)₃.
It crystallizes in the monoclinic crystal system (space group I2/a). It is a member of the Alluaudite structural group.
Key properties: Mohs hardness 4; specific gravity 4.29; Greasy luster; optically biaxial.
IMA symbol Cyn, IMA status: approved, named in 1874.
Found in veinlets in skarn in a metamorphosed Fe–Mn orebody.
It is found associated with Berzeliite, adelite, hedyphane, hausmannite, rhodonite, diopside, calcite.
Its name comes from the Greek for nut-brown, for its common color.
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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