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Barite
Barite

Sillimanite
Sillimanite



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Barite
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Sillimanite

Barite 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
4.483.20-3.26
Amber
1 7.18
1.5 Fracture
Uneven
Splintery
1.6 Cleavage
{010} Perfect, {210} Perfect, {010} Imperfect
{010} perfect
1.7 Mohs Hardness
3-3.56-7.5
Amber
2 10
1.8 Chemical Composition
BaSO4
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Barite and Sillimanite Chemical Formula

While comparing Barite 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 Barite and Sillimanite chemical formula.

  • Chemical formula of Barite- BaSO4
  • Chemical formula of Sillimanite- Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)

Barite and Sillimanite Specific Gravity

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