Phlogopite and Andesine Physical Properties

Phlogopite

Andesine

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1 Physical Properties

1.1 Tenacity

Tough

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.78-2.852.65-2.69

1 7.18

1.5 Fracture

None, Uneven

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Perfect basal (001)

Perfect on {001}, good on {010}

1.7 Mohs Hardness

2-2.56-6.5

2 10

1.8 Chemical Composition

Not Available

(Na,Ca)Al_1-2Si_3-2O₈

Phlogopite and Andesine Chemical Formula

While comparing Phlogopite and Andesine 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 Andesine chemical formula.

Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Phlogopite and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phlogopite and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite and Andesine Optical Properties during the identification of gemstone. Specific gravity of Phlogopite is 2.65-2.69 whereas that of Andesine is 2.65-2.69.