Phlogopite and Montebrasite Physical Properties

Phlogopite

Montebrasite

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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

2.98-3.10

Uneven, Conchoidal

{100} Perfect, {110} Good, {011} Distinct

5.5-6

LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

Phlogopite and Montebrasite Chemical Formula

While comparing Phlogopite and Montebrasite 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 Montebrasite chemical formula.

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Phlogopite and Montebrasite Specific Gravity

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