Gibbsite and Rosasite Physical Properties

Gibbsite

Rosasite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Effervesces in cold

1.3 Durability

Not Available

1.4 Specific Gravity

2.354-4.2

1 7.18

1.5 Fracture

Fibrous, Difficult, Fibrous

Splintery

1.6 Cleavage

{001} Perfect

Perfect on {100} and {010}

1.7 Mohs Hardness

2.5-34

2 10

1.8 Chemical Composition

Al(OH)3

Not Available

Gibbsite and Rosasite Chemical Formula

While comparing Gibbsite and Rosasite 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 Rosasite chemical formula.

Chemical formula of Gibbsite- Al(OH)3

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Gibbsite and Rosasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gibbsite and Rosasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gibbsite and Rosasite Optical Properties during the identification of gemstone. Specific gravity of Gibbsite is 4-4.2 whereas that of Rosasite is 4-4.2.