Zinnwaldite and Gibbsite Physical Properties

Zinnwaldite

Gibbsite

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1 Physical Properties

1.1 Tenacity

Elastic

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.12.35

1 7.18

1.5 Fracture

Uneven

Fibrous, Difficult, Fibrous

1.6 Cleavage

Perfect basal {001}

{001} Perfect

1.7 Mohs Hardness

3.5-4.02.5-3

2 10

1.8 Chemical Composition

Not Available

Al(OH)3

Zinnwaldite and Gibbsite Chemical Formula

While comparing Zinnwaldite 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 Zinnwaldite and Gibbsite chemical formula.

Chemical formula of Gibbsite- Al(OH)3

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Zinnwaldite and Gibbsite Specific Gravity

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