Charlesite and Gibbsite Physical Properties

Charlesite

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

1.79

2.35

1.5 Fracture

Irregular/uneven, Brittle, Metallic

Fibrous, Difficult, Fibrous

1.6 Cleavage

Perfect on {10bar10}

{001} Perfect

1.7 Mohs Hardness

2.5

2.5-3

1.8 Chemical Composition

Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)

Al(OH)3

Charlesite and Gibbsite Chemical Formula

While comparing Charlesite 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 Charlesite and Gibbsite chemical formula.

Chemical formula of Charlesite- Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12•26(H2O)
Chemical formula of Gibbsite- Al(OH)3

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Charlesite and Gibbsite Specific Gravity

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