Ettringite and Scheelite Physical Properties
Solubility
Partially soluble in water
-
Specific Gravity
1.77
5.9-6.3
Fracture
-
Conchoidal, Uneven
Cleavage
Perfect on {10 1 0}
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
Mohs Hardness
2-2.5
4.5-5
Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ettringite and Scheelite Chemical Formula
While comparing Ettringite 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 Ettringite and Scheelite chemical formula.
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Scheelite- CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ettringite and Scheelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ettringite and Scheelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Scheelite Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 5.9-6.3 whereas that of Scheelite is 5.9-6.3.