Ferro-pedrizite
Ferro-pedrizite is an IMA-recognized mineral species in the silicate class, with the chemical formula NaLi₂(Fe²⁺₂Al₂Li)Si₈O₂₂(OH)₂.
It crystallizes in the monoclinic crystal system (space group C2/m). It is a member of the Amphibole structural group.
Key properties: Mohs hardness 6; specific gravity 3.13–3.16; Pale gray streak; Vitreous luster; optically biaxial.
IMA symbol Fopd, IMA status: approved, named in 2014.
Found in veinlets in association with the metasomatism of spodumene-microcline pegmatite hosted by marble.
It is found associated with Quartz, albite, microcline, spodumene, cassiterite, beryl, columbite-(Mn), fluorapatite, fergusonite-β-(Y), schorl, trilithionite, fluorite.
As the Fe2+-dominant analogue of pedrizite.
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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