Galena and Apatite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
6.23
3.16-3.23
Fracture
Subconchoidal, Brittle, Metallic
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven
Cleavage
Cubic perfect on [001], parting on [111]
[0001] indistinct, [1010] indistinct
Chemical Composition
PbS
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Galena and Apatite Chemical Formula
While comparing Galena and Apatite 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 Galena and Apatite chemical formula.
- Chemical formula of Galena- PbS
- Chemical formula of Apatite- Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references
Galena and Apatite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Galena and Apatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Apatite Optical Properties during the identification of gemstone. Specific gravity of Galena is 3.16-3.23 whereas that of Apatite is 3.16-3.23.