Chlorastrolite and Variscite Physical Properties

Chlorastrolite

Variscite

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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

3.1-3.52.42-2.58

1 7.18

1.5 Fracture

Granular

Conchoidal, Splintery, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle

1.6 Cleavage

Not Available

[010] perfect

1.7 Mohs Hardness

5-64-5

2 10

1.8 Chemical Composition

Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)

AlPO₄ · 2(H₂O)

Chlorastrolite and Variscite Chemical Formula

While comparing Chlorastrolite and Variscite 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 Chlorastrolite and Variscite chemical formula.

Chemical formula of Chlorastrolite- Ca 2(Mg,Fe)Al 2(SiO 4)(Si 2O 7)(OH) 2 · H 2O)Arthur Thomas , Gemstones (2009)
Chemical formula of Variscite- AlPO₄ · 2(H₂O)

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Chlorastrolite and Variscite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chlorastrolite and Variscite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chlorastrolite and Variscite Optical Properties during the identification of gemstone. Specific gravity of Chlorastrolite is 2.42-2.58 whereas that of Variscite is 2.42-2.58.