Thulite and Phlogopite Physical Properties

Thulite

Phlogopite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.12.78-2.85

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

None, Uneven

1.6 Cleavage

Perfect {010} imperfect {100}

Perfect basal (001)

1.7 Mohs Hardness

6-72-2.5

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

Not Available

Thulite and Phlogopite Chemical Formula

While comparing Thulite and Phlogopite 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 Phlogopite chemical formula.

Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)

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Thulite and Phlogopite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thulite and Phlogopite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite and Phlogopite Optical Properties during the identification of gemstone. Specific gravity of Thulite is 2.78-2.85 whereas that of Phlogopite is 2.78-2.85.