Shigaite and Gibbsite Physical Properties

Shigaite

Gibbsite

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.322.35

1 7.18

1.5 Fracture

Flexible Flexible fragments.

Fibrous, Difficult, Fibrous

1.6 Cleavage

Perfect on {0001}

{001} Perfect

1.7 Mohs Hardness

22.5-3

2 10

1.8 Chemical Composition

Not Available

Al(OH)3

Shigaite and Gibbsite Chemical Formula

While comparing Shigaite and Gibbsite 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 Shigaite and Gibbsite chemical formula.

Chemical formula of Gibbsite- Al(OH)3

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Shigaite and Gibbsite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Shigaite and Gibbsite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Shigaite and Gibbsite Optical Properties during the identification of gemstone. Specific gravity of Shigaite is 2.35 whereas that of Gibbsite is 2.35.