Friedelite and Phenakite Physical Properties

Friedelite

Phenakite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.06-3.192.90-2.98

1 7.18

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Fracture

Uneven

Conchoidal, ConchoidalWalter Schumann

Cleavage

{010} Perfect

Distinct on {11 2 0}, imperfect on {10 1 1}

Mohs Hardness

4-57.5-8

2 10

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Chemical Composition

Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.

Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Friedelite and Phenakite Chemical Formula

While comparing Friedelite and Phenakite 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 Friedelite and Phenakite chemical formula.

Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Friedelite Vs Nepheline

Friedelite and Phenakite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Friedelite and Phenakite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Friedelite and Phenakite Optical Properties during the identification of gemstone. Specific gravity of Friedelite is 2.90-2.98 whereas that of Phenakite is 2.90-2.98.