Annabergite and Brucite Physical Properties

Annabergite

Brucite

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1 Physical Properties

1.1 Tenacity

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.072.39

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

Irregular

1.6 Cleavage

Perfect on {010}, indistinct on {100} and {102}

Perfect on {0001}

1.7 Mohs Hardness

22.5

2 10

1.8 Chemical Composition

Ni3(AsO4)2•8(H2O)

Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Annabergite and Brucite Chemical Formula

While comparing Annabergite and Brucite 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 Annabergite and Brucite chemical formula.

Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Annabergite and Brucite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Annabergite and Brucite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Annabergite and Brucite Optical Properties during the identification of gemstone. Specific gravity of Annabergite is 2.39 whereas that of Brucite is 2.39.