Pargasite and Spodumene Physical Properties

Pargasite

Spodumene

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.263.15-3.21

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

{110} perfect

Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°

1.7 Mohs Hardness

5-66-7

2 10

1.8 Chemical Composition

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

LiAlSi₂O₆

Pargasite and Spodumene Chemical Formula

While comparing Pargasite and Spodumene 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 Spodumene chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Spodumene- LiAlSi₂O₆

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Pargasite and Spodumene Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.