Question

Hematite : Iron :: Bauxite : --?-- *
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Answer 1

Answer:

ok

Explanation:

Bauxite is a sedimentary rock with a relatively high aluminium content. It is the world's main source of aluminium and gallium. Bauxite consists mostly of the aluminium minerals gibbsite (Al(OH)3), boehmite (γ-AlO(OH)) and diaspore (α-AlO(OH)), mixed with the two iron oxides goethite (FeO(OH)) and haematite (Fe2O3), the aluminium clay mineral kaolinite (Al2Si2O5(OH)) and small amounts of anatase (TiO2) and ilmenite (FeTiO3 or FeO.TiO2).[1

Hematite, also spelled as haematite, is a common iron oxide with a formula of Fe2O3 and is widespread in rocks and soils.[5] Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe

2O

3. It has the same crystal structure as corundum (Al

2O

3) and ilmenite (FeTiO

3), with which it forms a complete solid solution at temperatures above 950 °C (1,740 °F).

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