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Villiaumite
Villiaumite

Sillimanite
Sillimanite



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Villiaumite
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Sillimanite

Villiaumite and Sillimanite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Tough
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.793.20-3.26
Amber
1 7.18
1.5 Fracture
Brittle, Metallic
Splintery
1.6 Cleavage
{100} Perfect, {010} Perfect, {001} Perfect
{010} perfect
1.7 Mohs Hardness
26-7.5
Amber
2 10
1.8 Chemical Composition
NaFUlrich Henn and Claudio C.
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Villiaumite and Sillimanite Chemical Formula

While comparing Villiaumite 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 Villiaumite and Sillimanite chemical formula.

  • Chemical formula of Villiaumite- NaFUlrich Henn and Claudio C.
  • Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Villiaumite and Sillimanite Specific Gravity

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