Pargasite and Hardystonite Physical Properties

Pargasite

Hardystonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.263.396-3.443

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Brittle, Metallic

1.6 Cleavage

{110} perfect

[001] good, [100] and [110] fair

1.7 Mohs Hardness

5-63-4

2 10

1.8 Chemical Composition

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

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

Pargasite and Hardystonite Chemical Formula

While comparing Pargasite and Hardystonite 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 Hardystonite chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

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Pargasite and Hardystonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Hardystonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Hardystonite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.396-3.443 whereas that of Hardystonite is 3.396-3.443.