Wulfenite and Andradite Physical Properties

Wulfenite

Andradite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.50-7.003.70-4.10

1 7.18

1.5 Fracture

Irregular, Brittle, Conchoidal

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

1.6 Cleavage

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

none

1.7 Mohs Hardness

36.5-7

2 10

1.8 Chemical Composition

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

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

Wulfenite and Andradite Chemical Formula

While comparing Wulfenite and Andradite 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 Andradite chemical formula.

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

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Wulfenite and Andradite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Wulfenite and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wulfenite and Andradite Optical Properties during the identification of gemstone. Specific gravity of Wulfenite is 3.70-4.10 whereas that of Andradite is 3.70-4.10.