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Sillimanite and Caledonite Physical Properties


Caledonite and Sillimanite Physical Properties


Physical Properties

Tenacity
Tough   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.20-3.26   
5.6-5.76   

Fracture
Splintery   
Uneven, UnevenAnthony et al, Handbook of mineralogy (2001)   

Cleavage
{010} perfect   
[001] perfect; [100] distinct   

Mohs Hardness
6-7.5   
2.5-3   

Chemical Composition
Al 2SiO 5Michael O’Donoghue , Gems, Sixth Edition (2006)   
Pb 5Cu 2(SO 4) 3(CO 3)(OH) 6Anthony et al , Handbook of mineralogy (2001)   

Optical Properties >>
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Sillimanite and Caledonite Chemical Formula

While comparing Sillimanite and Caledonite 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 Caledonite chemical formula.

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Sillimanite and Caledonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sillimanite and Caledonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sillimanite and Caledonite Optical Properties during the identification of gemstone. Specific gravity of Sillimanite is 5.6-5.76 whereas that of Caledonite is 5.6-5.76.

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