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Silicate

Perrierite-(Ce)

Ce₄MgFe³⁺₂Ti₂O₈(Si₂O₇)₂
Hardness5.5
Crystal systemMonoclinic
ClassSilicate
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Perrierite-(Ce)

Perrierite-(Ce) is an IMA-recognized mineral species in the silicate class, with the chemical formula Ce₄MgFe³⁺₂Ti₂O₈(Si₂O₇)₂.

It crystallizes in the monoclinic crystal system (space group C2/m). It is a member of the Chevkinite structural group.

Key properties: Mohs hardness 5.5; specific gravity 4.29–4.45; Brown streak; Resinous, lustrous to dull luster; optically biaxial.

IMA symbol Prr-Ce, IMA status: approved, named in 1950.

Found in sands derived from weathered tuffs (Nettuno, Italy); in pockets in \hypersthene" granodiorite (Burley Farm, Virginia, USA); in syenite pegmatites (Oslo, Norway).

It is found associated with Microcline, aegirine, loparite, pyrophanite (Oslo, Norway).

The name refers to Carlo Perrier (1886–1948), Italian mineralogist.

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.