Lasnierite
Lasnierite is an IMA-recognized mineral species in the phosphate class, with the chemical formula (Ca,Sr)(Mg,Fe²⁺)₂Al(PO₄)₃.
It crystallizes in the orthorhombic crystal system (space group Pbcn).
Key properties: specific gravity 3.162.
IMA symbol Lnr, IMA status: approved, named in 2018.
Occurs as inclusions in a 1.97 carat, faceted, oval piece of lazulite-bearing blue quartzite.
It is found associated with Quartz, lazulite, chlorapatite, celestite, monazite-(Ce), xenotime-(Y), augelite, trolleite, svanbergite, goyazite, crandallite, berlinite, anhydrite.
The mineral was named to honor Emeritus Professor Bernard Lasnier (b. 1938), who taught geology, mineralogy, and gemology at the University of Nante, France.
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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