Sunstone and Cordierite Physical Properties

Sunstone

Cordierite

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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

2.62-2.652.57-2.66

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

001

Fair on {100}, poor on {001} and {010}

1.7 Mohs Hardness

67-7.5

2 10

1.8 Chemical Composition

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

Mg2Al4Si5O18

Sunstone and Cordierite Chemical Formula

While comparing Sunstone and Cordierite 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 Cordierite chemical formula.

Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Cordierite- Mg2Al4Si5O18

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Sunstone and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sunstone and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sunstone and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Sunstone is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.