Apophyllite and Realgar Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.30-2.50
3.56
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
(e.g. graphite).
Cleavage
Perfect on (001)
{010} Good
Mohs Hardness
4.5-5
Not Available
Chemical Composition
KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Apophyllite and Realgar Chemical Formula
While comparing Apophyllite 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 Apophyllite and Realgar chemical formula.
- Chemical formula of Apophyllite- KCa 4Si 8O 20(F,OH) · 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Apophyllite and Realgar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apophyllite and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite and Realgar Optical Properties during the identification of gemstone. Specific gravity of Apophyllite is 3.56 whereas that of Realgar is 3.56.