Wulfenite and Sillimanite Physical Properties

Wulfenite

Sillimanite

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1 Physical Properties

1.1 Tenacity

Brittle

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

6.50-7.003.20-3.26

1 7.18

1.5 Fracture

Irregular, Brittle, Conchoidal

Splintery

1.6 Cleavage

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

{010} perfect

1.7 Mohs Hardness

36-7.5

2 10

1.8 Chemical Composition

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

Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Wulfenite and Sillimanite Chemical Formula

While comparing Wulfenite and Sillimanite 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 Sillimanite chemical formula.

Chemical formula of Wulfenite- PbMoO 4Walter Schumann , Gemstones of the world (2001)
Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Red Gemstones

Wulfenite Vs Opal Australia

Wulfenite Vs Garnet Malaia

Wulfenite Vs Hessonite Garnet

Wulfenite and Sillimanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Wulfenite and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Wulfenite and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Wulfenite is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.