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

Birunite

Ca₁₈(SiO₃)₈.₅(CO₃)₈.₅(SO₄)·15H₂O
ClassSilicate
←PrevBirnessiteNextBischofite→

Birunite

Birunite is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₁₈(SiO₃)₈.₅(CO₃)₈.₅(SO₄)·15H₂O.

It is a member of the Ettringite structural group.

IMA symbol Brn, IMA status: questionable, named in 1957.

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 B minerals or help write this entry.