Pargasite and Shigaite Physical Properties

Pargasite

Shigaite

Add ⊕

1 Physical Properties

1.1 Tenacity

Not Available

Moderately ﬂexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.262.32

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Flexible Flexible fragments.

1.6 Cleavage

{110} perfect

Perfect on {0001}

1.7 Mohs Hardness

5-62

2 10

1.8 Chemical Composition

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

Not Available

Pargasite and Shigaite Chemical Formula

While comparing Pargasite and Shigaite 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 Shigaite chemical formula.

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

Compare Green Gemstones

Pargasite Vs Powellite

Pargasite Vs Prasiolite

Pargasite Vs Prase Opal

Pargasite and Shigaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Shigaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Shigaite Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 2.32 whereas that of Shigaite is 2.32.