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Feldspar
Feldspar

Lazulite
Lazulite



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Feldspar
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Lazulite

Feldspar and Lazulite Physical Properties

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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
 
-
-
-
3.04-3.17
Uneven
{001} Indistinct, {???} Indistinct
5.5
(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Feldspar and Lazulite Chemical Formula

While comparing Feldspar and Lazulite 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 Lazulite chemical formula.

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Feldspar and Lazulite Specific Gravity

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