Apatite and Realgar Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.16-3.23
3.56
Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
(e.g. graphite).
Cleavage
[0001] indistinct, [1010] indistinct
{010} Good
Mohs Hardness
5
Not Available
Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Apatite and Realgar Chemical Formula
While comparing Apatite 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 Apatite and Realgar chemical formula.
- Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Realgar- AsSMichael OâDonoghue , Gems, Sixth Edition (2006)
Apatite and Realgar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apatite and Realgar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Realgar Optical Properties during the identification of gemstone. Specific gravity of Apatite is 3.56 whereas that of Realgar is 3.56.