Sunstone and Gibbsite Physical Properties

Sunstone

Gibbsite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.62-2.652.35

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Fibrous, Difficult, Fibrous

1.6 Cleavage

001

{001} Perfect

1.7 Mohs Hardness

62.5-3

2 10

1.8 Chemical Composition

Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈

Al(OH)3

Sunstone and Gibbsite Chemical Formula

While comparing Sunstone 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 Sunstone and Gibbsite chemical formula.

Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Gibbsite- Al(OH)3

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Sunstone and Gibbsite Specific Gravity

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