Spodumene

Spodumene: a mineral with the formula LiAl[SiO2O6], occurring in the varieties Hiddenite and Kunzite. It ranges from transparent to translucent, with a luster from vitreous to pearly, and colors from gray to white, colorless, green, and purple. It crystallizes in the Monoclinic System and appears in prismatic or tabular forms.

(Foto: Parent Géry/Wikimedia Commons, License CC BY-SA 3.0)

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