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Laihunite: Fe++Fe+++2(SiO4)2
Comments: B&W optical micrograph of eulysite in reflected light. Fayalite (Fa) in dark gray with rhe layered laihunite (La) in light gray, pyroxene (Py), and magnetite (Mt). AmMin v69:154. Location: Hebei Iron mine, China. Scale: See Image. © American Mineralogist