Gibbsite and Chromite Physical Properties

Gibbsite

Chromite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.354.5-4.8

1 7.18

1.5 Fracture

Fibrous, Difficult, Fibrous

Uneven

1.6 Cleavage

{001} Perfect

None, parting may develop along {111}

1.7 Mohs Hardness

2.5-35.5

2 10

1.8 Chemical Composition

Al(OH)3

Fe++Cr2O4

Gibbsite and Chromite Chemical Formula

While comparing Gibbsite and Chromite 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 Chromite chemical formula.

Chemical formula of Gibbsite- Al(OH)3
Chemical formula of Chromite- Fe++Cr2O4

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Gibbsite Vs Vanadinite

Gibbsite and Chromite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gibbsite and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gibbsite and Chromite Optical Properties during the identification of gemstone. Specific gravity of Gibbsite is 4.5-4.8 whereas that of Chromite is 4.5-4.8.