Pargasite and Gahnospinel Physical Properties

Pargasite

Gahnospinel

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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

3.04-3.263.65-4.55

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{110} perfect

None, but may exhibit slight parting

1.7 Mohs Hardness

5-67.5-8

2 10

1.8 Chemical Composition

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

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Pargasite and Gahnospinel Chemical Formula

While comparing Pargasite and Gahnospinel 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 Gahnospinel chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

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Pargasite and Gahnospinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.