Phenakite and Andalusite Physical Properties

Phenakite

Andalusite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

Brittle

2.90-2.98

Conchoidal, ConchoidalWalter Schumann

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

7.5-8

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

3.05-3.21

Uneven, Subconchoidal, Splintery

Good on {110}, poor on {100}

7.5

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Phenakite and Andalusite Chemical Formula

While comparing Phenakite and Andalusite 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 Andalusite chemical formula.

Compare Colorless Gems

Phenakite Vs Orthoclase

Phenakite Vs Oligoclase

Phenakite Vs Muscovite

Phenakite and Andalusite Specific Gravity

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