Wulfenite and Spinel Physical Properties

Wulfenite

Spinel

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

none

1.3 Durability

Not Available

1.4 Specific Gravity

6.50-7.003.64-3.66

1 7.18

1.5 Fracture

Irregular, Brittle, Conchoidal

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

None, but may exhibit slight parting

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

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

MgAl₂O₄

Wulfenite and Spinel Chemical Formula

While comparing Wulfenite and Spinel 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 Spinel chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
Chemical formula of Spinel- MgAl₂O₄

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Wulfenite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Wulfenite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wulfenite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Wulfenite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.