Halite and Andalusite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Water-soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.17
3.05-3.21
Fracture
Conchoidal, Brittle, Metallic
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect {001}, three directions cubic
Good on {110}, poor on {100}
Mohs Hardness
2.0-2.5
7.5
Chemical Composition
NaCl
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Halite and Andalusite Chemical Formula
While comparing Halite 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 Halite and Andalusite chemical formula.
- Chemical formula of Halite- NaCl
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Halite and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Halite and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Halite and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Halite is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.