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Cassiterite and Corundum Physical Properties


Corundum and Cassiterite Physical Properties


Physical Properties

Tenacity
Brittle   
Brittle   

Solubility
insoluble   
insoluble   

Durability
Not Available   
Not Available   

Specific Gravity
6.86-7.03   
3.90-4.05   

Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular   
Uneven, Uneven, Gems, Difficult, Fibrous   

Cleavage
{100} imperfect, {110} indistinct; partings on {111} or {011}   
None – parting in 3 directions   

Mohs Hardness
6-7   
9   

Chemical Composition
SnO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
Al 2O 3Arthur Thomas , Gemstones (2009)   

Optical Properties >>
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Cassiterite and Corundum Chemical Formula

While comparing Cassiterite and Corundum 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 Cassiterite and Corundum chemical formula.

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Cassiterite and Corundum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cassiterite and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cassiterite and Corundum Optical Properties during the identification of gemstone. Specific gravity of Cassiterite is 3.90-4.05 whereas that of Corundum is 3.90-4.05.

Red Gemstones

Red Gemstones


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