Brucite and Annabergite Physical Properties

Brucite

Annabergite

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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

2.393.07

1 7.18

1.5 Fracture

Irregular

Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

Perfect on {0001}

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

1.7 Mohs Hardness

2.52

2 10

1.8 Chemical Composition

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

Ni3(AsO4)2•8(H2O)

Brucite and Annabergite Chemical Formula

While comparing Brucite and Annabergite 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 Brucite and Annabergite chemical formula.

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

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Brucite and Annabergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brucite and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brucite and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Brucite is 3.07 whereas that of Annabergite is 3.07.