Sugilite and Pargasite Physical Properties

Sugilite

Pargasite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.69-2.793.04-3.26

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Splintery, Brittle, Uneven

1.6 Cleavage

Poor on {0001}

{110} perfect

1.7 Mohs Hardness

5.5-6.55-6

2 10

1.8 Chemical Composition

KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Sugilite and Pargasite Chemical Formula

While comparing Sugilite and Pargasite 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 Sugilite and Pargasite chemical formula.

Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Sugilite and Pargasite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sugilite and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.