Translucent sharp crystals of manganaxinite to 2.5 cm in size with some greenish crystals of epidote (4.7 × 3.0 × 3.0 cm). Found from Canta, Lima, Peru — Photo: Ivar Leidus · CC BY-SA 4.0
Axinite-(Mn)
Also known as: Manganaxinite.
Axinite-(Mn) is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₄Mn²⁺₂Al₄[B₂Si₈O₃₀](OH)₂.
It crystallizes in the triclinic crystal system (space group P-1). It is a member of the Axinite structural group.
Key properties: Mohs hardness 6.5–7; typically orange or brown or yellow; white streak; vitreous luster.
IMA symbol Ax-Mn, IMA status: approved, named in 1909.
Collections: Collector Favorites.
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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