Polyhalite and Azurite Physical Properties

Polyhalite

Azurite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Soluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.783.70-3.90

1 7.18

1.5 Fracture

Conchoidal, Brittle

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

1.6 Cleavage

Perfect on {10 1 }; parting on {010}

Perfect on {011}, fair on {100}, poor on {110}

1.7 Mohs Hardness

3.53.5-4

2 10

1.8 Chemical Composition

Not Available

Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Polyhalite and Azurite Chemical Formula

While comparing Polyhalite and Azurite 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 Polyhalite and Azurite chemical formula.

Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Red Gemstones

Polyhalite Vs Vanadinite

Polyhalite Vs Jacinth

Polyhalite Vs Heliotrope

Polyhalite and Azurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Polyhalite and Azurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Polyhalite and Azurite Optical Properties during the identification of gemstone. Specific gravity of Polyhalite is 3.70-3.90 whereas that of Azurite is 3.70-3.90.