Faustite and Phlogopite Physical Properties

Faustite

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

2.92.78-2.85

1 7.18

1.5 Fracture

Conchoidal, ConchoidalAnthony et al, Conchoidal, Brittle, Conchoidal

None, Uneven

1.6 Cleavage

{???} Indistinct

Perfect basal (001)

1.7 Mohs Hardness

4.52-2.5

2 10

1.8 Chemical Composition

(Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Not Available

Faustite and Phlogopite Chemical Formula

While comparing Faustite 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 Faustite and Phlogopite chemical formula.

Chemical formula of Faustite- (Zn,Cu)Al 6(PO 4) 4(OH) 8 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Faustite and Phlogopite Specific Gravity

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