Andradite and Brucite Physical Properties

Andradite

Brucite

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1 Physical Properties

1.1 Tenacity

Brittle

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.70-4.102.39

1 7.18

1.5 Fracture

Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)

Irregular

1.6 Cleavage

none

Perfect on {0001}

1.7 Mohs Hardness

6.5-72.5

2 10

1.8 Chemical Composition

Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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

Andradite and Brucite Chemical Formula

While comparing Andradite 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 Andradite and Brucite chemical formula.

Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Andradite and Brucite Specific Gravity

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