Sunstone and Feldspar Physical Properties

Sunstone

Feldspar

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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

2.62-2.652.56-2.75

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)

1.6 Cleavage

001

two or three

1.7 Mohs Hardness

66-6.5

2 10

1.8 Chemical Composition

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

Not Available

Sunstone and Feldspar Chemical Formula

While comparing Sunstone and Feldspar 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 Feldspar chemical formula.

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

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Sunstone and Feldspar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sunstone and Feldspar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sunstone and Feldspar Optical Properties during the identification of gemstone. Specific gravity of Sunstone is 2.56-2.75 whereas that of Feldspar is 2.56-2.75.