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Schorl and Feldspar Physical Properties


Feldspar and Schorl Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.18-3.22   
2.56-2.75   

Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal   
Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)   

Cleavage
{1011} Indistinct   
two or three   

Mohs Hardness
Not Available   
6-6.5   

Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)   
Not Available   

Optical Properties >>
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Schorl and Feldspar Chemical Formula

While comparing Schorl and Feldspar 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 Schorl and Feldspar chemical formula.

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Schorl and Feldspar Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Feldspar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Feldspar Optical Properties during the identification of gemstone. Specific gravity of Schorl is 2.56-2.75 whereas that of Feldspar is 2.56-2.75.

Black Gemstones

Black Gemstones


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