Nolzeite
Nolzeite is an IMA-recognized mineral species in the silicate class, with the chemical formula Na(Mn, )₂[Si₃(B,Si)O₉(OH)₂]·2H₂O.
It crystallizes in the triclinic crystal system (space group P-1).
Key properties: specific gravity 2.79; White streak; Vitreous luster.
IMA symbol Nlz, IMA status: approved, named in 2014.
A late-stage mineral likely formed under alkaline conditions in vugs in altered sodalite syenite.
It is found associated with Aegirine, nepheline, sodalite, eudialyte-group minerals, analcime, natron, pyrrhotite, catapleiite, steedeite.
The mineral was named to honor Dr. Gert Nolze (b. 1960), a crystallographer at the Federal Institute for Materials Research and Testing (BAM), Berlin, Germany.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
Browse more N minerals or help write this entry.