Simferite
Simferite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Li(Mg,Fe³⁺,Mn³⁺)₂(PO₄)₂.
It crystallizes in the orthorhombic crystal system (space group Pbnm). It is a member of the Olivine-Sarcopside structural group.
Key properties: specific gravity 3.22–3.27; Cinnamon-brown streak; Vitreous to greasy luster; optically biaxial.
IMA symbol Smf, IMA status: approved, named in 1989.
At the contact of a rare-earth-bearing granite pegmatite and phlogopitized ultramafic tremolite rock.
It is found associated with Muscovite, quartz, oligoclase, albite, phlogopite, tourmaline, apatite.
The name refers to the city of Simferopol, Crimea, Ukraine, where the mineral was studied.
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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