Sunstone and Bertrandite Physical Properties

Sunstone

Bertrandite

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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

2.62-2.652.59-2.60

1 7.18

1.5 Fracture

Gemstones of the world (2001)

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

001

{001} Perfect, {110} Distinct, {101} Distinct

1.7 Mohs Hardness

66-7

2 10

1.8 Chemical Composition

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

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Sunstone and Bertrandite Chemical Formula

While comparing Sunstone and Bertrandite 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 Bertrandite chemical formula.

Chemical formula of Sunstone- Microcline: KAlSi₃O₈ Oligoclase: (Na,Ca)Al_1-2Si_3-2O₈
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Sunstone and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sunstone and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sunstone and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Sunstone is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.