Pargasite and Apophyllite KF Physical Properties

Pargasite

Apophyllite KF

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.04-3.262.33-2.37

1 7.18

1.5 Fracture

Splintery, Brittle, Uneven

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

{110} perfect

Perfect on {001}, imperfect on {110}

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)

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Pargasite and Apophyllite KF Chemical Formula

While comparing Pargasite and Apophyllite KF 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 Apophyllite KF chemical formula.

Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)

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Pargasite and Apophyllite KF Specific Gravity

Another important criteria for qualitative analysis of gemstones is Pargasite and Apophyllite KF Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pargasite and Apophyllite KF Optical Properties during the identification of gemstone. Specific gravity of Pargasite is 2.33-2.37 whereas that of Apophyllite KF is 2.33-2.37.