Lepageite
Lepageite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula Mn²⁺₃(Fe³⁺₇Fe²⁺₄)O₃[Sb³⁺₅As³⁺₈O₃₄].
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: specific gravity 5.192; Metallic luster.
IMA symbol Lep, IMA status: approved, named in 2018.
A primary accessory mineral in a lens of granitic LCT (Li-Cs-Ta) pegmatite developed during injection of an evolved LCT-type melt related to anatectic processes within a metasedimentary-metavolcanic complex into serpentinite.
It is found associated with Mn-Be-Na-Cs-bearing cordierite, schafarzikite, harmotome, Ba-bearing microcline, barite, hematite.
The mineral was named to honor Yvon Le Page (b.
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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