Chrysocolla and Alunite Physical Properties

Chrysocolla

Alunite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.00-2.452.6-2.9

1 7.18

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

none

On {0001}, perfect

1.7 Mohs Hardness

2-43.5-4

2 10

1.8 Chemical Composition

Cu₂H₂Si₂O₅(OH)₄

KAl3(SO4)2(OH)6

Chrysocolla and Alunite Chemical Formula

While comparing Chrysocolla and Alunite 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 Alunite chemical formula.

Chemical formula of Chrysocolla- Cu₂H₂Si₂O₅(OH)₄
Chemical formula of Alunite- KAl3(SO4)2(OH)6

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Chrysocolla and Alunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chrysocolla and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chrysocolla and Alunite Optical Properties during the identification of gemstone. Specific gravity of Chrysocolla is 2.6-2.9 whereas that of Alunite is 2.6-2.9.