Augite and Wulfenite Physical Properties

Augite

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

3.19-3.566.50-7.00

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Irregular, Brittle, Conchoidal

1.6 Cleavage

{110} Perfect, {010} Indistinct

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

1.7 Mohs Hardness

5.5-63

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

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

Augite and Wulfenite Chemical Formula

While comparing Augite 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 Augite and Wulfenite chemical formula.

Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)

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Augite and Wulfenite Specific Gravity

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