Labradorite and Apophyllite KF Physical Properties

Labradorite

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

2.69-2.722.33-2.37

1 7.18

1.5 Fracture

Uneven, Conchoidal, Gems, Sixth Edition (2006)

Uneven, Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

Perfect on {001}, imperfect on {110}

1.7 Mohs Hardness

6-6.54.5-5

2 10

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

(K,Na)Ca4Si8O20(F,OH)•8(H2O)

Labradorite and Apophyllite KF Chemical Formula

While comparing Labradorite 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 Labradorite and Apophyllite KF chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)

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Labradorite and Apophyllite KF Specific Gravity

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