Thulite and Wulfenite Physical Properties

Thulite

Wulfenite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.16.50-7.00

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

Irregular, Brittle, Conchoidal

1.6 Cleavage

Perfect {010} imperfect {100}

On {011}, distinct; on {001}, {013}, indistinct

1.7 Mohs Hardness

6-73

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

PbMoO 4Walter Schumann , Gemstones of the world (2001)

Thulite and Wulfenite Chemical Formula

While comparing Thulite and Wulfenite 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 Wulfenite chemical formula.

Chemical formula of Thulite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)

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Thulite and Wulfenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Thulite and Wulfenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thulite and Wulfenite Optical Properties during the identification of gemstone. Specific gravity of Thulite is 6.50-7.00 whereas that of Wulfenite is 6.50-7.00.