spodumene

noun1

1. •
   The mineral lithium aluminium inosilicate (LiAl(SiO₃)₂), a pyroxene and ore of lithium, sometimes regarded as a gemstone, which may be greenish, yellowish or pinkish in appearance.

   • The individual characters of the several minerals produced from the change of the spodumene have already been given, and something has been said as to their mutual relations;[…]. — 1880