Zinnwaldite and Thulite Physical Properties

Zinnwaldite

Thulite

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1 Physical Properties

1.1 Tenacity

Elastic

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.13.1

1 7.18

1.5 Fracture

Uneven

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect basal {001}

Perfect {010} imperfect {100}

1.7 Mohs Hardness

3.5-4.06-7

2 10

1.8 Chemical Composition

Not Available

Ca₂Al₃(SiO₄)₃(OH)

Zinnwaldite and Thulite Chemical Formula

While comparing Zinnwaldite 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 Zinnwaldite and Thulite chemical formula.

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

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Zinnwaldite and Thulite Specific Gravity

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