Sunstone and Ettringite Physical Properties

Sunstone

Ettringite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partially soluble in water

1.3 Durability

Not Available

1.4 Specific Gravity

2.62-2.651.77

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Not Available

1.6 Cleavage

001

Perfect on {10 1 0}

1.7 Mohs Hardness

62-2.5

2 10

1.8 Chemical Composition

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

Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Sunstone and Ettringite Chemical Formula

While comparing Sunstone and Ettringite 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 Ettringite chemical formula.

Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Sunstone and Ettringite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sunstone and Ettringite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sunstone and Ettringite Optical Properties during the identification of gemstone. Specific gravity of Sunstone is 1.77 whereas that of Ettringite is 1.77.