Hollandite and Azurite Physical Properties

Hollandite

Azurite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.053.70-3.90

1 7.18

1.5 Fracture

Brittle, Metallic

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

1.6 Cleavage

Distinct / Good, Prismatic

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

1.7 Mohs Hardness

4-63.5-4

2 10

1.8 Chemical Composition

Ba(Mn++++,Mn++)8O16

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

Hollandite and Azurite Chemical Formula

While comparing Hollandite 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 Hollandite and Azurite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Hollandite and Azurite Specific Gravity

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