Spinel and Wulfenite Physical Properties

Spinel

Wulfenite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

none

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.64-3.666.50-7.00

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

Irregular, Brittle, Conchoidal

1.6 Cleavage

None, but may exhibit slight parting

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

1.7 Mohs Hardness

2 10

1.8 Chemical Composition

MgAl₂O₄

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

Spinel and Wulfenite Chemical Formula

While comparing Spinel 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 Spinel and Wulfenite chemical formula.

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

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Spinel and Wulfenite Specific Gravity

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