Phlogopite and Lazulite Physical Properties

Phlogopite

Lazulite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Tough

2.78-2.85

Uneven

Perfect basal (001)

2-2.5

KMg3(Si3Al)O10(F,OH)2

3.04-3.17

Uneven

{001} Indistinct, {???} Indistinct

5.5

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Phlogopite and Lazulite Chemical Formula

While comparing Phlogopite and Lazulite 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 Lazulite chemical formula.

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Phlogopite and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phlogopite and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite Vs Lazulite during the identification of gemstone. Specific gravity of Phlogopite is whereas that of Lazulite is .