Halite and Achroite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Water-soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.17
2.90-3.40
Fracture
Conchoidal, Brittle, Metallic
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Cleavage
Perfect {001}, three directions cubic
Not Available
Mohs Hardness
2.0-2.5
7-7.5
Chemical Composition
NaCl
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Halite and Achroite Chemical Formula
While comparing Halite and Achroite 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 Achroite chemical formula.
- Chemical formula of Halite- NaCl
- Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Halite and Achroite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Halite and Achroite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Halite and Achroite Optical Properties during the identification of gemstone. Specific gravity of Halite is 2.90-3.40 whereas that of Achroite is 2.90-3.40.