Fluorbarytolamprophyllite
Fluorbarytolamprophyllite is an IMA-recognized mineral species in the silicate class, with the chemical formula (Ba,Sr,K)₂[(Na,Fe²⁺)₃TiF₂][Ti₂(Si₂O₇)₂O₂].
It crystallizes in the monoclinic crystal system (space group C2/m). It is a member of the Seidozerite-Lamprophyllite structural group.
Key properties: Mohs hardness 2.5; specific gravity 3.662; Vitreous to pearly luster; optically biaxial.
IMA symbol Fblmp, IMA status: approved, named in 2017.
Found in agpaitic syenites of an alkaline complex.
It is found associated with Potassium feldspar, Ti-rich aegirine-augite, aenigmatite, alkaline amphiboles, astrophyllite, natrolite, ferripyrophyllite.
Indicates the F-dominant analogue of barytolamprophyllite and Ba-dominant analogue of fluorlamprophyllite.