Sylvite and Phenakite Physical Properties

Sylvite

Phenakite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

1.9932.90-2.98

1 7.18

1.5 Fracture

Uneven, Brittle

Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle

1.6 Cleavage

Perfect on [100], [010], [001]

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

1.7 Mohs Hardness

2.57.5-8

2 10

1.8 Chemical Composition

Not Available

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

Sylvite and Phenakite Chemical Formula

While comparing Sylvite 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 Sylvite and Phenakite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Sylvite and Phenakite Specific Gravity

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