Achroite and Scheelite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-3.40
5.9-6.3
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Uneven
Cleavage
Not Available
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
Mohs Hardness
7-7.5
4.5-5
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.
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Achroite and Scheelite Chemical Formula
While comparing Achroite and Scheelite 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 Scheelite 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 Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Achroite and Scheelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Achroite and Scheelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Scheelite Optical Properties during the identification of gemstone. Specific gravity of Achroite is 5.9-6.3 whereas that of Scheelite is 5.9-6.3.