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Feldspar
Feldspar

Bustamite
Bustamite



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Feldspar
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Bustamite

Feldspar and Bustamite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.56-2.75
Uneven, Conchoidal
two or three
6-6.5
KAlSi3O8
 
-
Partly soluble in HCl.
-
3.32-3.43
Conchoidal
{100} perfect; {110} and {1 1 0} good; {010} poor
5.5-6
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Feldspar and Bustamite Chemical Formula

While comparing Feldspar and Bustamite 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 Feldspar and Bustamite chemical formula.

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Feldspar and Bustamite Specific Gravity

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