Natrolite is a silicate of sodium and this element, whose silicate is also found along with calcium in scolecite, and it can also be found in dickite and nacrite, which are rarer forms of kaolinite.
Natrolite is a silicate of sodium and this element, whose silicate is also found along with calcium in scolecite, and it can also be found in dickite and nacrite, which are rarer forms of kaolinite. This elements oxy- hydroxides include bohmite and gibbsite, and the sum of the number of silicon atoms plus the number of this element's atoms must equal one half for those silicates to be called zeolites. The melting point of this element is significantly lowered in the presence of a hexafluoride complex of sodium and it called cryolite, and its ore is purified to yield its oxide in the Bayer process. For 10 points, identify this element which is refined in the Hall Heroult process.
Natrolite is a silicate of sodium and this element, whose silicate is also found along with calcium in scolecite, and it can also be found in dickite and nacrite, which are rarer forms of kaolinite.
{Aluminum} [or {Aluminium}; or {Al}]