Hercynite and Brucite Physical Properties

Hercynite

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

4.392.39

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

Irregular

1.6 Cleavage

{111} Indistinct, {111} Indistinct, {111} Indistinct

Perfect on {0001}

1.7 Mohs Hardness

7.5-82.5

2 10

1.8 Chemical Composition

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

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

Hercynite and Brucite Chemical Formula

While comparing Hercynite 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 Hercynite and Brucite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Hercynite and Brucite Specific Gravity

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