Andalusite and Chrysocolla Physical Properties

Andalusite

Chrysocolla

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

3.05-3.212.00-2.45

1 7.18

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Fracture

Uneven, Subconchoidal, Splintery

Sub-Conchoidal, Conchoidal

Cleavage

Good on {110}, poor on {100}

none

Mohs Hardness

7.52-4

2 10

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Chemical Composition

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

Cu₂H₂Si₂O₅(OH)₄

Andalusite and Chrysocolla Chemical Formula

While comparing Andalusite and Chrysocolla 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 Andalusite and Chrysocolla chemical formula.

Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Chemical formula of Chrysocolla- Cu₂H₂Si₂O₅(OH)₄

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Andalusite and Chrysocolla Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Chrysocolla Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Chrysocolla Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.00-2.45 whereas that of Chrysocolla is 2.00-2.45.