Andalusite and Labradorite Physical Properties

Andalusite

Labradorite

Add ⊕

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

3.05-3.212.69-2.72

1 7.18

👆🏻

Fracture

Uneven, Subconchoidal, Splintery

Uneven, Conchoidal

Cleavage

Good on {110}, poor on {100}

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

Mohs Hardness

7.56-6.5

2 10

👆🏻

Chemical Composition

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

(Na,Ca)_1-2Si_3-2O₈

Andalusite and Labradorite Chemical Formula

While comparing Andalusite and Labradorite 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 Andalusite and Labradorite chemical formula.

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

Compare Brown Gemstones

Andalusite Vs Apatite

Andalusite Vs Apophyllite

Andalusite Vs Aragonite

Andalusite and Labradorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Andalusite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.