Important ores of Aluminium:
(1) Corundum (Al2O3)
(2) Diaspore (Al2O3.H2O)
(3) Bauxite (Al2O3.2H2O)
(4) Gibbsite (Al2O3.3H2O)
(5) Cryolite (AlF3.3NaF) or Na3AlF6
(4) Alunite (K2SO4.Al2(SO4)3.4Al(OH)3
(5) Spinel (MgOAl2O3)
(6) Felspar (K2O.Al2O3.6SiO3) or KAlSi3O8
(7) China Clay or Kaoline [Al2O3.2SiO2.2H2O]
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