Glagolevite
Glagolevite is an IMA-recognized mineral species in the silicate class, with the chemical formula Na(Mg,Al)₆(Si₃Al)O₁₀(OH,O)₈.
It crystallizes in the triclinic crystal system (space group C1).
Key properties: Mohs hardness 3–5; specific gravity 2.66; White streak; Vitreous to pearly luster; optically biaxial.
IMA symbol Ggl, IMA status: approved, named in 2001.
Found in lenses within altered melilitic rocks in a phlogopite deposit in an alkaline massif.
It is found associated with Pectolite, monticellite, diopside, phlogopite, andradite, calcite, olivine, magnetite, vesuvianite.
The mineral was named to honor Russian mineralogist A.A. Glagolev (1927-1993).
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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