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Sillimanite
Sillimanite

Barite
Barite



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Sillimanite
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Barite

Sillimanite and Barite Physical Properties

1 Physical Properties
1.1 Tenacity
Tough
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.20-3.264.48
Amber
1 7.18
1.5 Fracture
Splintery
Uneven
1.6 Cleavage
{010} perfect
{010} Perfect, {210} Perfect, {010} Imperfect
1.7 Mohs Hardness
6-7.53-3.5
Amber
2 10
1.8 Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)
BaSO4

Sillimanite and Barite Chemical Formula

While comparing Sillimanite and Barite 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 Sillimanite and Barite chemical formula.

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

Sillimanite and Barite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Barite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Barite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 4.48 whereas that of Barite is 4.48.