Hollandite and Malachite Physical Properties

Hollandite

Malachite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

5.053.25-4.10

1 7.18

1.5 Fracture

Brittle, Metallic

Conchoidal, Conchoidal, Gemstones (2009), Uneven

1.6 Cleavage

Distinct / Good, Prismatic

Perfect on { 2 01} fair on {010}

1.7 Mohs Hardness

4-63.5-4

2 10

1.8 Chemical Composition

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

Cu₂CO₃(OH)₂

Hollandite and Malachite Chemical Formula

While comparing Hollandite and Malachite 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 Malachite chemical formula.

Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Chemical formula of Malachite- Cu₂CO₃(OH)₂

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Hollandite and Malachite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hollandite and Malachite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hollandite and Malachite Optical Properties during the identification of gemstone. Specific gravity of Hollandite is 3.25-4.10 whereas that of Malachite is 3.25-4.10.