Phenakite and Covellite Physical Properties

Phenakite

Covellite

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1 Physical Properties

1.1 Tenacity

Brittle

Flexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.984.6-4.76

1 7.18

1.5 Fracture

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

Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Metallic

1.6 Cleavage

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

Perfect on {0001}

1.7 Mohs Hardness

7.5-8Not Available

2 10

1.8 Chemical Composition

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

CuSMichael OâDonoghue , Gems, Sixth edition (2006) More from other references

Phenakite and Covellite Chemical Formula

While comparing Phenakite and Covellite 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 Covellite chemical formula.

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

Compare Colorless Gems

Phenakite Vs Quartz

Phenakite Vs Pyromorphite

Phenakite Vs Prase Opal

Phenakite and Covellite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Covellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Covellite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 4.6-4.76 whereas that of Covellite is 4.6-4.76.