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Ericssonite: BaMn++2Fe+++O[Si2O7](OH) Orthoericssonite: BaMn2(Fe+++O)Si2O7(OH) Tephroite: Mn2SiO4
Comments: Dark brown ericssonite, intergrown with orthoericssonite, with pink rhodonite, light brown diopside (var. schefferite) and gray tephroite.
Location: Langban, Varmland, Sweden.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species