Wulfenite and Iolite Physical Properties

Wulfenite

Iolite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.50-7.002.6-2.7

1 7.18

1.5 Fracture

Irregular, Brittle, Conchoidal

Not Available

1.6 Cleavage

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

3,1

1.7 Mohs Hardness

37-7.5

2 10

1.8 Chemical Composition

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

Mg₂Al₄Si₅O₁₈

Wulfenite and Iolite Chemical Formula

While comparing Wulfenite and Iolite 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 Wulfenite and Iolite chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Wulfenite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Wulfenite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wulfenite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Wulfenite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.