Andalusite and Labradorite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.05-3.21
2.69-2.72
Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Uneven, Conchoidal, Gems, Sixth Edition (2006)
Cleavage
Good on {110}, poor on {100}
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Na,Ca)1-2Si3-2O8
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)1-2Si3-2O8
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.