Prismatine

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Prismatine
General
CategorySorosilicate
Formula
(repeating unit)
([ ],Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
Strunz classification9.BJ.50
Crystal systemOrthorhombic
Crystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space groupCmcm
Identification
ColorYellow brown, green brown, brown green
Specific gravity3.34
Optical propertiesBiaxial (-)
References[1][2][3]

Prismatine is an orthorhombic-dipyramidal mineral containing aluminium, boron, fluorine, hydrogen, iron, magnesium, oxygen, and silicon. It forms a solid solution series with kornerupine.[3]

References[edit]