Ettringite and Realgar Physical Properties
Tenacity
Not Available
Not Available
Solubility
Partially soluble in water
Not Available
Durability
Not Available
Not Available
Specific Gravity
1.77
3.56
Fracture
Not Available
(e.g. graphite).
Cleavage
Perfect on {10 1 0}
{010} Good
Mohs Hardness
2-2.5
Not Available
Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Ettringite and Realgar Chemical Formula
While comparing Ettringite and Realgar 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 Realgar chemical formula.
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Ettringite and Realgar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ettringite and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Realgar Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 3.56 whereas that of Realgar is 3.56.