Thulite and Realgar Physical Properties

Thulite

Realgar

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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

3.13.56

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

(e.g. graphite).

1.6 Cleavage

Perfect {010} imperfect {100}

{010} Good

1.7 Mohs Hardness

6-7Not Available

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

Thulite and Realgar Chemical Formula

While comparing Thulite and Realgar 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 Thulite and Realgar chemical formula.

Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)

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Thulite and Realgar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thulite and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite and Realgar Optical Properties during the identification of gemstone. Specific gravity of Thulite is 3.56 whereas that of Realgar is 3.56.