Phlogopite and Labradorite Physical Properties

Phlogopite

Labradorite

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1 Physical Properties

1.1 Tenacity

Tough

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.78-2.852.69-2.72

1 7.18

1.5 Fracture

None, Uneven

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect basal (001)

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

1.7 Mohs Hardness

2-2.56-6.5

2 10

1.8 Chemical Composition

Not Available

(Na,Ca)_1-2Si_3-2O₈

Phlogopite and Labradorite Chemical Formula

While comparing Phlogopite and Labradorite 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 Phlogopite and Labradorite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Phlogopite and Labradorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phlogopite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Phlogopite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.