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Kyanite: Al2SiO5 = AlAlOSiO4
Comments: Two terminated, bright blue crystals of kyanite in a white quartz matrix.
Location: Barra do Salinas, Minas Gerais, Brazil.
Scale: 9.5 x 4 x 4 cm.
© Isaias Casanova / IC Minerals
Comments: Cluster of 4, green, gemmy, fluorescent blades of kyanite.
Location: Pech, Afghanistan.
Scale: 1.7 x 1.0 x 0.3 cm.
© Kieth Hayes