Sunstone and Fayalite Physical Properties

Sunstone

Fayalite

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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

2.62-2.654.392

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

001

{010} moderate, {100} imperfect

1.7 Mohs Hardness

66.5-7

2 10

1.8 Chemical Composition

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

Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Sunstone and Fayalite Chemical Formula

While comparing Sunstone and Fayalite 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 Fayalite chemical formula.

Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Sunstone and Fayalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sunstone and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sunstone and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Sunstone is 4.392 whereas that of Fayalite is 4.392.