Pargasite and Gaspeite Physical Properties

Pargasite

Gaspeite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

HCl soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.263.71

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Uneven

1.6 Cleavage

{110} perfect

{10 1 1} Good

1.7 Mohs Hardness

5-64.5-5

2 10

1.8 Chemical Composition

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

(Ni,Mg,Fe++)CO3

Pargasite and Gaspeite Chemical Formula

While comparing Pargasite and Gaspeite 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 Gaspeite chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Gaspeite- (Ni,Mg,Fe++)CO3

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Pargasite and Gaspeite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Gaspeite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Gaspeite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.71 whereas that of Gaspeite is 3.71.