Achroite and Tavorite Physical Properties
Specific Gravity
2.90-3.40
3.32
Fracture
Uneven, ConchoidalWalter Schumann
-
Cleavage
Indiscernible
{???} Distinct, {???} Distinct, {???} Distinct
Mohs Hardness
7-7.5
-9999
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.
LiFe3+ (PO 4)(OH)Anthony et al , Handbook of mineralogy (2001)
Achroite and Tavorite Chemical Formula
While comparing Achroite and Tavorite 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 Tavorite 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 Tavorite- LiFe3+ (PO 4)(OH)Anthony et al , Handbook of mineralogy (2001)
Achroite and Tavorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Achroite and Tavorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Tavorite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 3.32 whereas that of Tavorite is 3.32.