Chiastolite and Apophyllite KF Physical Properties

Chiastolite

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

3.00-3.152.33-2.37

1 7.18

1.5 Fracture

Not Available

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Not Available

Perfect on {001}, imperfect on {110}

1.7 Mohs Hardness

5-5.54.5-5

2 10

1.8 Chemical Composition

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Chiastolite and Apophyllite KF Chemical Formula

While comparing Chiastolite 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 Chiastolite and Apophyllite KF chemical formula.

Chemical formula of Chiastolite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)

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Chiastolite and Apophyllite KF Specific Gravity

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