Iolite and Brucite Physical Properties

Iolite

Brucite

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1 Physical Properties

1.1 Tenacity

Not Available

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.72.39

1 7.18

1.5 Fracture

Not Available

Irregular

1.6 Cleavage

3,1

Perfect on {0001}

1.7 Mohs Hardness

7-7.52.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

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

Iolite and Brucite Chemical Formula

While comparing Iolite 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 Iolite and Brucite chemical formula.

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

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Iolite and Brucite Specific Gravity

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