Phlogopite and Edenite Physical Properties

Phlogopite

Edenite

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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

2.78-2.853.05-3.37

1 7.18

1.5 Fracture

None, Uneven

Conchoidal, Brittle, Conchoidal

1.6 Cleavage

Perfect basal (001)

Good on (110)

1.7 Mohs Hardness

2-2.55-6

2 10

1.8 Chemical Composition

Not Available

NaCa2Mg5Si7AlO22(OH)2

Phlogopite and Edenite Chemical Formula

While comparing Phlogopite and Edenite 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 Edenite chemical formula.

Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2

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Phlogopite and Edenite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phlogopite and Edenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite and Edenite Optical Properties during the identification of gemstone. Specific gravity of Phlogopite is 3.05-3.37 whereas that of Edenite is 3.05-3.37.