Andesine and Polyhalite Physical Properties

Andesine

Polyhalite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.65-2.692.78

1 7.18

1.5 Fracture

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

Conchoidal, Brittle

1.6 Cleavage

Perfect on {001}, good on {010}

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

1.7 Mohs Hardness

6-6.53.5

2 10

1.8 Chemical Composition

(Na,Ca)Al_1-2Si_3-2O₈

Not Available

Andesine and Polyhalite Chemical Formula

While comparing Andesine 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 Andesine and Polyhalite chemical formula.

Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Andesine and Polyhalite Specific Gravity

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