Sillimanite
= Sillimanite
{title2=$\mathrm{Al_2SiO_5}$}
{wiki}
An aluminium-bearing <silicate mineral>, one of several minerals sharing this composition with different <crystal structures>.
= Sillimanite
{title2=$\mathrm{Al_2SiO_5}$}
{wiki}
An aluminium-bearing <silicate mineral>, one of several minerals sharing this composition with different <crystal structures>.