Achroite and Boleite Physical Properties
Specific Gravity
2.90-3.40
5.05
Fracture
Uneven, ConchoidalWalter Schumann
Uneven
Cleavage
Indiscernible
[001] perfect
Mohs Hardness
7-7.5
3-3.5
Chemical Composition
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.
Pb 26Ag 10Cu 24Cl 62(OH) 48 · 3H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Achroite and Boleite Chemical Formula
While comparing Achroite and Boleite 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 Achroite and Boleite chemical formula.
- 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.
- Chemical formula of Boleite- Pb 26Ag 10Cu 24Cl 62(OH) 48 · 3H 2OWalter Schumann , Gemstones of the world (2001) More from other references
Achroite and Boleite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Achroite and Boleite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Boleite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 5.05 whereas that of Boleite is 5.05.