Brucite and Austinite Physical Properties

Brucite

Austinite

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

Easily soluble in cold dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

2.394.12

1 7.18

1.5 Fracture

Irregular

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

Perfect on {0001}

Good in two directions parallel to the prism faces {110}

1.7 Mohs Hardness

2.54-4.5

2 10

1.8 Chemical Composition

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

CaZn(AsO4)(OH)

Brucite and Austinite Chemical Formula

While comparing Brucite and Austinite 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 Austinite chemical formula.

Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Austinite- CaZn(AsO4)(OH)

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Brucite and Austinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brucite and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brucite and Austinite Optical Properties during the identification of gemstone. Specific gravity of Brucite is 4.12 whereas that of Austinite is 4.12.