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Schorl and Powellite Physical Properties


Powellite 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   
4.23   

Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal   
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal   

Cleavage
{1011} Indistinct   
{111} Distinct   

Mohs Hardness
Not Available   
3.5-4   

Chemical Composition
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)   
CaMoO 4Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Schorl and Powellite Chemical Formula

While comparing Schorl and Powellite 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 Powellite chemical formula.

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Schorl and Powellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Schorl and Powellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Schorl and Powellite Optical Properties during the identification of gemstone. Specific gravity of Schorl is 4.23 whereas that of Powellite is 4.23.

Black Gemstones

Black Gemstones


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