Farringtonite
Farringtonite is an IMA-recognized mineral species in the phosphate class, with the chemical formula Mg₃(PO₄)₂.
It crystallizes in the monoclinic crystal system (space group P2_1/n).
Key properties: specific gravity 2.8; optically biaxial.
IMA symbol Frt, IMA status: approved, named in 1961.
A rare component in pallasite meteorites, rimming and cementing olivine nodules.
It is found associated with Olivine, stanfieldite, troilite, schreibersite, kamacite.
The mineral was named to honor Dr. Oliver Cummings Farrington (1864–1933), Curator of Geology, Field Museum of Natural History, Chicago, Illinois, USA, an authority on meteorites.
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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