Andradite Garnet and Polyhalite Physical Properties

Andradite Garnet

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

3.8-3.92.78

1 7.18

1.5 Fracture

Not Available

Conchoidal, Brittle

1.6 Cleavage

None

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

1.7 Mohs Hardness

6.5-7.53.5

2 10

1.8 Chemical Composition

Ca₃Fe³⁺₂Si₃O₁₂

Not Available

Andradite Garnet and Polyhalite Chemical Formula

While comparing Andradite Garnet 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 Andradite Garnet and Polyhalite chemical formula.

Chemical formula of Andradite Garnet- Ca₃Fe³⁺₂Si₃O₁₂

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Andradite Garnet and Polyhalite Specific Gravity

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