Phlogopite and Mottramite Physical Properties

Phlogopite

Mottramite

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1 Physical Properties

1.1 Tenacity

Tough

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.78-2.855.9

1 7.18

1.5 Fracture

None, Uneven

Sub-Conchoidal, Brittle, Metallic

1.6 Cleavage

Perfect basal (001)

None observed

1.7 Mohs Hardness

2-2.53

2 10

1.8 Chemical Composition

Not Available

Phlogopite and Mottramite Chemical Formula

While comparing Phlogopite and Mottramite 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 Mottramite chemical formula.

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Phlogopite and Mottramite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phlogopite and Mottramite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite and Mottramite Optical Properties during the identification of gemstone. Specific gravity of Phlogopite is 5.9 whereas that of Mottramite is 5.9.