Phlogopite and Spodumene Physical Properties

Phlogopite

Spodumene

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1 Physical Properties

1.1 Tenacity

Tough

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.78-2.853.15-3.21

1 7.18

1.5 Fracture

None, Uneven

Uneven, Subconchoidal, Gemstones (2009)

1.6 Cleavage

Perfect basal (001)

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

1.7 Mohs Hardness

2-2.56-7

2 10

1.8 Chemical Composition

Not Available

LiAlSi₂O₆

Phlogopite and Spodumene Chemical Formula

While comparing Phlogopite 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 Phlogopite and Spodumene chemical formula.

Chemical formula of Spodumene- LiAlSi₂O₆

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Phlogopite and Spodumene Specific Gravity

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