Almandine and Wulfenite Physical Properties

Almandine

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

3.95-4.306.50-7.00

1 7.18

1.5 Fracture

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Irregular, Brittle, Conchoidal

1.6 Cleavage

none

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

1.7 Mohs Hardness

7-7.53

2 10

1.8 Chemical Composition

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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

Almandine and Wulfenite Chemical Formula

While comparing Almandine 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 Almandine and Wulfenite chemical formula.

Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)

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Almandine and Wulfenite Specific Gravity

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