Grandidierite and Brucite Physical Properties

Grandidierite

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

2.85-3.002.39

1 7.18

1.5 Fracture

Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven

Irregular

1.6 Cleavage

Perfect

Perfect on {0001}

1.7 Mohs Hardness

7.52.5

2 10

1.8 Chemical Composition

(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.

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

Grandidierite and Brucite Chemical Formula

While comparing Grandidierite 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 Grandidierite and Brucite chemical formula.

Chemical formula of Grandidierite- (Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Grandidierite and Brucite Specific Gravity

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