Question

iv) Write a note on the importance of Bauxite.​

Answer 1

Explanation:

Bauxite is a rock formed from a reddish clay material called laterite soil and is most commonly found in tropical or subtropical regions. Bauxite is primarily comprised of aluminum oxide compounds (alumina), silica, iron oxides and titanium dioxide.

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Answer 2

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Bauxite is not a . It is a formed from a laterite soil that has been severely leached of silica and other soluble materials in a wet tropical or subtropical climate. It is the primary ore of aluminum. Almost all of the aluminum that has ever been produced has been extracted from bauxite.

1. What is Bauxite's Composition?

Bauxite does not have a specific composition. It is a mixture of hydrous aluminum oxides, aluminum hydroxides, clay minerals, and insoluble materials such as , , , siderite, and goethite. The aluminum minerals in bauxite can include: gibbsite Al(OH)

3

, boehmite AlO(OH), and, diaspore, AlO(OH).

• Physical Properties of Bauxite

• Color

White, gray, sometimes stained yellow, orange, red, pink, or brown by iron or included iron minerals

• Streak

Usually white, but iron stain can discolor

• Luster

Dull, earthy

• Diaphaneity

Opaque

• Cleavage

None

• Mohs Hardness

1 to 3

• Specific Gravity

2 to 2.5