Plumbogummite and Phenakite Physical Properties

Plumbogummite

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

4.0142.90-2.98

1 7.18

1.5 Fracture

Uneven, Conchoidal

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

1.6 Cleavage

None

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

1.7 Mohs Hardness

4-57.5-8

2 10

1.8 Chemical Composition

Not Available

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

Plumbogummite and Phenakite Chemical Formula

While comparing Plumbogummite 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 Plumbogummite and Phenakite chemical formula.

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

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Plumbogummite and Phenakite Specific Gravity

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