Pargasite and Diaspore Physical Properties

Pargasite

Diaspore

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1 Physical Properties

1.1 Tenacity

Not Available

Very brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.263.30-3.40

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

{110} perfect

{010} perfect, {110} distinct, {100} in traces

1.7 Mohs Hardness

5-66.5-7

2 10

1.8 Chemical Composition

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

AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Pargasite and Diaspore Chemical Formula

While comparing Pargasite and Diaspore 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 Diaspore chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Diaspore- AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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Pargasite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.