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

Badakhshanite-(Y)

Y₂Mn₄Al(Si₂B₇BeO₂₄)
Hardness6.5–7
Crystal systemOrthorhombic
ClassSilicate
←PrevBackiteNextBadalovite→

Badakhshanite-(Y)

Badakhshanite-(Y) is an IMA-recognized mineral species in the silicate class, with the chemical formula Y₂Mn₄Al(Si₂B₇BeO₂₄).

It crystallizes in the orthorhombic crystal system (space group Pnma). It is a member of the Perettiite structural group.

Key properties: Mohs hardness 6.5–7; specific gravity 4.27; White streak; Vitreous luster; optically biaxial.

IMA symbol Bad-Y, IMA status: approved, named in 2018.

Found in medium- to coarse-grained, non-graphic, miarolitic albite-microcline-quartz pegmatite veins cutting amphibolite and epidote-amphibolite facies slates and marbles.

It is found associated with Smoky quartz, Sc-bearing spessartine, Sc-bearing tusionite, schorl.

The name refers to the region in which the studied material was collected. A suffix indicates the dominant rare earth element.

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.