Brucite and Spodumene Physical Properties

Brucite

Spodumene

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1 Physical Properties

1.1 Tenacity

Sectile

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.393.15-3.21

1 7.18

1.5 Fracture

Irregular

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

Perfect on {0001}

Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°

1.7 Mohs Hardness

2.56-7

2 10

1.8 Chemical Composition

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

LiAlSi₂O₆

Brucite and Spodumene Chemical Formula

While comparing Brucite and Spodumene 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 Spodumene chemical formula.

Chemical formula of Brucite- Mg(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Spodumene- LiAlSi₂O₆

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Brucite and Spodumene Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brucite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brucite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Brucite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.