Phenakite and Vivianite Physical Properties

Phenakite

Vivianite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.90-2.982.64-2.70

1 7.18

1.5 Fracture

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

(e.g. graphite).

1.6 Cleavage

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

{010} Perfect

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

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Phenakite and Vivianite Chemical Formula

While comparing Phenakite and Vivianite 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 Vivianite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Colorless Gems

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Phenakite Vs Prase Opal

Phenakite Vs Quartz

Phenakite and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.