Goshenite and Polyhalite Physical Properties

Goshenite

Polyhalite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.60-2.902.78

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Conchoidal, Brittle

1.6 Cleavage

3,1 basal

Perfect on {10 1 }; parting on {010}

1.7 Mohs Hardness

7.5-83.5

2 10

1.8 Chemical Composition

Be₃Al₂SiO₆

Not Available

Goshenite and Polyhalite Chemical Formula

While comparing Goshenite and Polyhalite 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 Goshenite and Polyhalite chemical formula.

Chemical formula of Goshenite- Be₃Al₂SiO₆

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Goshenite and Polyhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Goshenite and Polyhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Goshenite and Polyhalite Optical Properties during the identification of gemstone. Specific gravity of Goshenite is 2.78 whereas that of Polyhalite is 2.78.