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Phenakite
Phenakite

Allanite
Allanite



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Phenakite
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Allanite

Phenakite and Allanite Physical Properties

1 Physical Properties
1.1 Tenacity
Brittle
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.90-2.983.40-4.20
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle
Not Available
1.6 Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
Not Available
1.7 Mohs Hardness
7.5-8Not Available
Amber
2 10
1.8 Chemical Composition
Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Not Available

Phenakite and Allanite Chemical Formula

While comparing Phenakite and Allanite 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 Allanite chemical formula.

  • Chemical formula of Phenakite- Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
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Phenakite and Allanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Allanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Allanite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 3.40-4.20 whereas that of Allanite is 3.40-4.20.