Forsterite and Phlogopite Physical Properties

Forsterite

Phlogopite

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1 Physical Properties

1.1 Tenacity

Not Available

Tough

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.23-3.262.78-2.85

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

None, Uneven

1.6 Cleavage

Perfect on {010} imperfect on {100}

Perfect basal (001)

1.7 Mohs Hardness

6.5-72-2.5

2 10

1.8 Chemical Composition

Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Not Available

Forsterite and Phlogopite Chemical Formula

While comparing Forsterite and Phlogopite 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 Forsterite and Phlogopite chemical formula.

Chemical formula of Forsterite- Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Forsterite and Phlogopite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Forsterite and Phlogopite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Forsterite and Phlogopite Optical Properties during the identification of gemstone. Specific gravity of Forsterite is 2.78-2.85 whereas that of Phlogopite is 2.78-2.85.