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Phenakite
Phenakite

Phlogopite
Phlogopite



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Phenakite
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Phlogopite

Phenakite and Phlogopite Physical Properties

Physical Properties

Tenacity

Brittle
Tough

Solubility

-
-

Durability

-
-

Specific Gravity

2.90-2.982.78-2.85
1 7.18
👆🏻

Fracture

Conchoidal, ConchoidalWalter Schumann
Uneven

Cleavage

Distinct on {11 2 0}, imperfect on {10 1 1}
Perfect basal (001)

Mohs Hardness

7.5-82-2.5
2 10
👆🏻

Chemical Composition

Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
KMg3(Si3Al)O10(F,OH)2

Phenakite and Phlogopite Chemical Formula

While comparing Phenakite 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 Phenakite and Phlogopite chemical formula.

  • Chemical formula of Phenakite- Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Phlogopite- KMg3(Si3Al)O10(F,OH)2

Phenakite and Phlogopite Specific Gravity

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