Zorite
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Zorite is a silicate mineral with the chemical formula of Na₂Ti(Si, Al)₃O₉·nH₂O. It is named because of its pink color, after the Russian word "zoria" which refers to the rosy hue of the sky at dawn. It is primarily found in Mount Karnasurta,... Wikipedia
Crystal class: Dipyramidal (mmm); H-M symbol: (2/m 2/m 2/m)
Crystal habit: Prismic acicular crystals, sometimes radiating
Crystal system: Orthorhombic
Formula mass: 1,538.53 g/mol
Formula (repeating unit): Na2Ti(Si,Al)3O9·nH2O
Optical properties: Anisotropic, biaxial