Phenakite and Fluorite Physical Properties

Phenakite

Fluorite

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Physical Properties

Tenacity

Brittle

Solubility

slightly water soluble and in hot hydrochloric acid

Durability

Specific Gravity

2.90-2.983.00-3.25

1 7.18

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Fracture

Conchoidal, ConchoidalWalter Schumann

Subconchoidal, Uneven, ConchoidalWalter Schumann

Cleavage

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

Octahedral, perfect on {111}, parting on {011}

Mohs Hardness

7.5-84

2 10

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Chemical Composition

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

CaF₂

Phenakite and Fluorite Chemical Formula

While comparing Phenakite and Fluorite 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 Fluorite chemical formula.

Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Fluorite- CaF₂

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Phenakite and Fluorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Phenakite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.