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Prismatine: ([ ],Fe,Mg)(Mg,Al,Fe)5Al4Si2(Si,Al)2(B,Si,Al)(O,OH,F)22
Comments: Prismatic crystals of prismatine in matrix.
Location: Waldheim, Saxony, Germany.
Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag