Spinel Crystal
Nov 21，2023
Spinel is not soluble in water. It is also not soluble in acid and NaOH, except HF.
Crystal System
The space lattice of MgO·3.5Al2O3 belongs to the cubic system, and its spinel-type structure contains 8Mg16Al32 within a unit cell has a lattice constant of a=0.8059 nm. Cleavage does not occur.
Production
It is synthesized by melting with oxyhydrogen flame of the Verneuil method. The composition of Al2O3 in MgO can be taken for wide range, but MgO·3.5Al2O3 is the easiest to obtain. MgO·Al2O3 is also easy to synthesize.
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