Magnesiorowlandite-(Y)
Magnesiorowlandite-(Y) is an IMA-recognized mineral species in the silicate class, with the chemical formula Y₄(Mg,Fe)(Si₂O₇)₂F₂.
It is a member of the Rowlandite structural group.
Key properties: Mohs hardness 5–5.5; specific gravity 4.82; White streak; Vitreous to oily luster; optically biaxial.
IMA symbol Mrow-Y, IMA status: approved, named in 2012.
Found in a block of granitic pegmatite collected from a talus slope.
It is found associated with Quartz, albite, K-feldspar, muscovite, allanite-(Ce), gadlinite-(Y).
As the magnesium analog of rowlandite-(Y).
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 M minerals or help write this entry.