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Phenakite
Phenakite

Cobaltite
Cobaltite



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Phenakite
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Cobaltite

Phenakite and Cobaltite 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
2.90-2.986.3
Amber
1 7.18
1.5 Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
1.6 Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
{100} Good, {010} Good, {001} Good
1.7 Mohs Hardness
7.5-85.5
Amber
2 10
1.8 Chemical Composition
Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
CoAsSAnthony et al , Handbook of mineralogy (2001)

Phenakite and Cobaltite Chemical Formula

While comparing Phenakite and Cobaltite 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 Cobaltite chemical formula.

  • Chemical formula of Phenakite- Be 2SiO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)

Phenakite and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 6.3 whereas that of Cobaltite is 6.3.