Riebeckite and Gibbsite Physical Properties

Riebeckite

Gibbsite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.28-3.442.35

1 7.18

1.5 Fracture

Uneven, Splintery, Brittle

Fibrous, Difficult, Fibrous

1.6 Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

{001} Perfect

1.7 Mohs Hardness

5.0-6.02.5-3

2 10

1.8 Chemical Composition

Not Available

Al(OH)3

Riebeckite and Gibbsite Chemical Formula

While comparing Riebeckite 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 Riebeckite and Gibbsite chemical formula.

Chemical formula of Gibbsite- Al(OH)3

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Riebeckite and Gibbsite Specific Gravity

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