Chrysocolla and Poudretteite Physical Properties

Chrysocolla

Poudretteite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.00-2.452.51-2.53

1 7.18

1.5 Fracture

Sub-Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle

Conchoidal, Splintery

1.6 Cleavage

none

None

1.7 Mohs Hardness

2-45

2 10

1.8 Chemical Composition

Cu₂H₂Si₂O₅(OH)₄

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Chrysocolla and Poudretteite Chemical Formula

While comparing Chrysocolla and Poudretteite 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 Chrysocolla and Poudretteite chemical formula.

Chemical formula of Chrysocolla- Cu₂H₂Si₂O₅(OH)₄
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

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Chrysocolla and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrysocolla and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysocolla and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Chrysocolla is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.