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Schorl
Schorl

Umbalite
Umbalite



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Schorl
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Umbalite

Schorl and Umbalite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.18-3.22
Uneven, Conchoidal
{1011} Indistinct
-9999
Na(Fe2+3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
 
-
-
-
3.62-4.33
Uneven
Indiscernible
7-7.5
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

Schorl and Umbalite Chemical Formula

While comparing Schorl and Umbalite 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 Umbalite chemical formula.

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Schorl and Umbalite Specific Gravity

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