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Silicate

Minasgeraisite-(Y)

CaBe₂Y₂Si₂O₁₀
Crystal systemMonoclinic
ClassSilicate
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Minasgeraisite-(Y) specimen

Minasgeraisite-(Y) Locality: Jaguaraçu pegmatite (José Miranda mine; José Pinto mine; Carneirinho mine), Jaguaraçu , Minas Gerais , Southeast Region, Brazil ( Locality at mindat.org ) Red micro xls of Minasgeraisite-(Y) (analysed). Field of view 3 mm. Specimen and photo Leon Hupperichs. — Photo: Leon Hupperichs · CC BY-SA 3.0

Minasgeraisite-(Y)

Minasgeraisite-(Y) is a discredited mineral species in the gadolinite supergroup with the chemical formula (Ca2Y2)□2(Be2B2)Si4O16(OH)4. Typically appearing as minute, purplish-lavender rosettes in granitic pegmatites, it was first identified at the José Pinto quarry in 1986 in Jaguaraçu, Minas Gerais, Brazil. The mineral was named after its type locality and approved by the International Mineralogical Association (IMA).

Intro adapted from Wikipedia (CC BY-SA).

Minasgeraisite-(Y) is an IMA-recognized mineral species in the silicate class, with the chemical formula CaBe₂Y₂Si₂O₁₀.

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

IMA symbol Mgr-Y, IMA status: approved, named in 1983.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet. Browse more M minerals or help write this entry.