Riebeckite and Phenakite Physical Properties

Riebeckite

Phenakite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.28-3.442.90-2.98

1 7.18

1.5 Fracture

Uneven, Splintery, Brittle

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

1.6 Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

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

1.7 Mohs Hardness

5.0-6.07.5-8

2 10

1.8 Chemical Composition

Not Available

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

Riebeckite and Phenakite Chemical Formula

While comparing Riebeckite 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 Riebeckite and Phenakite chemical formula.

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

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Riebeckite and Phenakite Specific Gravity

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