Gibbsite and Shigaite Physical Properties

Gibbsite

Shigaite

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1 Physical Properties

1.1 Tenacity

Not Available

Moderately ﬂexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.352.32

1 7.18

1.5 Fracture

Fibrous, Difficult, Fibrous

Flexible Flexible fragments.

1.6 Cleavage

{001} Perfect

Perfect on {0001}

1.7 Mohs Hardness

2.5-32

2 10

1.8 Chemical Composition

Al(OH)3

Not Available

Gibbsite and Shigaite Chemical Formula

While comparing Gibbsite and Shigaite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Gibbsite and Shigaite chemical formula.

Chemical formula of Gibbsite- Al(OH)3

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Gibbsite and Shigaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gibbsite and Shigaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gibbsite and Shigaite Optical Properties during the identification of gemstone. Specific gravity of Gibbsite is 2.32 whereas that of Shigaite is 2.32.