Brucite and Cordierite Physical Properties

Brucite

Cordierite

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.392.57-2.66

1 7.18

1.5 Fracture

Irregular

Subconchoidal, Conchoidal, Brittle

1.6 Cleavage

Perfect on {0001}

Fair on {100}, poor on {001} and {010}

1.7 Mohs Hardness

2.57-7.5

2 10

1.8 Chemical Composition

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

Mg2Al4Si5O18

Brucite and Cordierite Chemical Formula

While comparing Brucite and Cordierite 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 Cordierite chemical formula.

Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Cordierite- Mg2Al4Si5O18

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Brucite and Cordierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brucite and Cordierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brucite and Cordierite Optical Properties during the identification of gemstone. Specific gravity of Brucite is 2.57-2.66 whereas that of Cordierite is 2.57-2.66.