The open encyclopedia of minerals
GlossaryCite the database
Mineralogist.org
Minerals A–ZSearchCollectionsBrowse by PropertyIdentify a SpecimenCompare MineralsLocalities MapGlossaryContribute Search the Database →
Silicate

Perbøeite-(La)

(CaLa₃)(Al₃Fe²⁺)[Si₂O₇][SiO₄]₃O(OH)₂
Hardness6
Crystal systemMonoclinic
ClassSilicate
←PrevPerbøeite-(Ce)NextPercleveite-(Ce)→

Perbøeite-(La)

Perbøeite-(La) is an IMA-recognized mineral species in the silicate class, with the chemical formula (CaLa₃)(Al₃Fe²⁺)[Si₂O₇][SiO₄]₃O(OH)₂.

It crystallizes in the monoclinic crystal system (space group P2_1/m). It is a member of the Gatelite structural group.

Key properties: Mohs hardness 6; specific gravity 4.483; Brown streak; Vitreous luster; optically biaxial.

IMA symbol Pbø-La, IMA status: approved, named in 2019.

Nodules of the deposit have a contact metasomatic origin, probably developed during fenitization of granitic pegmatites in the exocontact of an alkaline intrusion.

It is found associated with Ferriperbøeite-(La), allanite-(Ce), allanite-(La), bastnäsite-(Ce), bastnäsite-(La), ferriallanite-(Ce), ferriallanite-(La), ferriperbøeite-(Ce).

The suffix indicates the La-analogue of perbøeite-(Ce).

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.