Minasgeraisite-(Y), Chernovite-(Y), Microcline, Muscovite, Milarite
Jaguaraçu pegmatite, Jaguaraçu, Minas Gerais, Brazil
From the type locality comes this large, museum size, pegmatite specimen of the exceedingly rare calcium beryllium yttrium silicate minasgeraisite-(Y). It is also associated with another rare and unusual mineral, chernovite-(Y) which is a yttrium arsenate. Minasgeraisite-(Y) is recognizable as tiny, sub-1 mm, lavender crystals sprinkled over ...
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