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Halide

Polezhaevaite-(Ce)

NaSrCeF₆
Hardness3
Crystal systemHexagonal
ClassHalide
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Polezhaevaite-(Ce)

Polezhaevaite-(Ce) is an IMA-recognized mineral species in the halide class, with the chemical formula NaSrCeF₆.

It crystallizes in the hexagonal crystal system (space group P6_3/m). It is a member of the Gagarinite structural group.

Key properties: Mohs hardness 3; specific gravity 4.2; White streak; Silky (aggregates) luster; optically uniaxial.

IMA symbol Pzv-Ce, IMA status: approved, named in 2009.

Found in a natrolitized microcline-aegirine-sodalite lens in apatite-rich urtite. Formed by hydrothermal alteration of peralkaline pegmatite.

It is found associated with Aegirine, albite, arfvedsonite, astrophyllite, burbankite, catapleiite, chlorbartonite, djerfisherite, elpasolite, fluorapatite, fluorite, galena.

The mineral was named to honor Lyudmila Ivanovna Polezhaeva (b. 1935), an expert in electron microprobe analysis of minerals, Geological Institute, Kola Science Center, Russian Academy of Sciences.

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 P minerals or help write this entry.