Allanite and Gibbsite Physical Properties

Allanite

Gibbsite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.40-4.202.35

1 7.18

1.5 Fracture

Not Available

Fibrous, Difficult, Fibrous

1.6 Cleavage

Not Available

{001} Perfect

1.7 Mohs Hardness

Not Available2.5-3

2 10

1.8 Chemical Composition

Not Available

Al(OH)3

Allanite and Gibbsite Chemical Formula

While comparing Allanite 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 Allanite and Gibbsite chemical formula.

Chemical formula of Gibbsite- Al(OH)3

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Allanite and Gibbsite Specific Gravity

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