Tourmaline and Phenakite Physical Properties

Tourmaline

Phenakite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.85-3.352.90-2.98

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)

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

1.6 Cleavage

Indistinct

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

1.7 Mohs Hardness

7-7.57.5-8

2 10

1.8 Chemical Composition

Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.

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

Tourmaline and Phenakite Chemical Formula

While comparing Tourmaline 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 Tourmaline and Phenakite chemical formula.

Chemical formula of Tourmaline- Tourmaline is a series of several different minerals with unique chemical formulas. See The chemical formula of Tourmaline for details.
Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Tourmaline and Phenakite Specific Gravity

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