Pollucite and Chrysocolla Physical Properties

Pollucite

Chrysocolla

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Readily soluble in HF

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.86-2.942.00-2.45

1 7.18

1.5 Fracture

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle

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

1.6 Cleavage

None observed

none

1.7 Mohs Hardness

6.5-72-4

2 10

1.8 Chemical Composition

(Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references

Cu₂H₂Si₂O₅(OH)₄

Pollucite and Chrysocolla Chemical Formula

While comparing Pollucite 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 Pollucite and Chrysocolla chemical formula.

Chemical formula of Pollucite- (Cs,Na)(AlSi 2O 6) · 0.5H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Chrysocolla- Cu₂H₂Si₂O₅(OH)₄

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Pollucite and Chrysocolla Specific Gravity

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