Labradorite and Andalusite Physical Properties

Labradorite

Andalusite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.69-2.723.05-3.21

1 7.18

1.5 Fracture

Uneven, Conchoidal, Gems, Sixth Edition (2006)

Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

Good on {110}, poor on {100}

1.7 Mohs Hardness

6-6.57.5

2 10

1.8 Chemical Composition

(Na,Ca)_1-2Si_3-2O₈

Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

Labradorite and Andalusite Chemical Formula

While comparing Labradorite and Andalusite 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 Labradorite and Andalusite chemical formula.

Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈
Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references

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Labradorite and Andalusite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Labradorite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Labradorite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Labradorite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.