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Pargasite and Neptunite Physical Properties


Neptunite and Pargasite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.04-3.26   
3.19-3.23   

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

Cleavage
{110} perfect   
{110} good   

Mohs Hardness
5-6   
5-6   

Chemical Composition
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael O’Donoghue , Gems, Sixth Edition (2006)   
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Pargasite and Neptunite Chemical Formula

While comparing Pargasite and Neptunite 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 Pargasite and Neptunite chemical formula.

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Pargasite and Neptunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.

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Green Gemstones


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