Bayerite

Gibbsite, Al(OH)3, is an important ore of aluminium and is one of three minerals that make up the rock bauxite. Bauxite is often thought of as a mineral but is really a rock composed of aluminium oxide and hydroxide minerals such as gibbsite, boehmite (γ-AlO(OH)), and diaspore (α-AlO(OH)), as well as clays, silt, and iron oxides and hydroxides. Bauxite is a laterite, a rock formed from intense weathering environments such as found in richly forested, humid, tropical climates.
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General Information:
 Chemical Formula:
Al(OH)3
 Composition:
(Molecular Weight = 78.00 gm)
Aluminum 34.59 % Al
Hydrogen 3.88 % H 
Oxygen 61.53 % O 
 Empirical Formula:
Al(OH)3
Physical Properties:
 Color:
colorless or white.
 Density:
2.53
 Diaphaniety:
Transparent
 Streak:
white
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B: (Kimia) bayerit
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