Ferrorosemaryite
Ferrorosemaryite is an IMA-recognized mineral species in the phosphate class, with the chemical formula NaFe²⁺(Fe³⁺Al)(PO₄)₃.
It crystallizes in the monoclinic crystal system (space group P2_1/n). It is a member of the Alluaudite-Wyllieite structural group.
Key properties: Mohs hardness 4; specific gravity 3.62; Greenish to brownish streak; Resinous luster; optically biaxial.
IMA symbol Frmy, IMA status: approved, named in 2003.
Found in cassiterite and columbite-tantalite-bearing granitic pegmatite.
It is found associated with Scorzalite, trolleite, montebrasite, bertossaite, brazilianite, augelite, triplite, anlacroixite, quartz, mica, feldspar.
As the Fe2+ analog of rosemaryite.
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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