Chlorastrolite and Thulite Physical Properties

Chlorastrolite

Thulite

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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

3.1-3.53.1

1 7.18

1.5 Fracture

Granular

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Not Available

Perfect {010} imperfect {100}

1.7 Mohs Hardness

5-66-7

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)

Ca₂Al₃(SiO₄)₃(OH)

Chlorastrolite and Thulite Chemical Formula

While comparing Chlorastrolite and Thulite 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 Thulite 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 Thulite- Ca₂Al₃(SiO₄)₃(OH)

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Chlorastrolite and Thulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chlorastrolite and Thulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chlorastrolite and Thulite Optical Properties during the identification of gemstone. Specific gravity of Chlorastrolite is 3.1 whereas that of Thulite is 3.1.