Galena and Fayalite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
6.23
4.392
Fracture
Subconchoidal, Brittle, Metallic
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Cleavage
Cubic perfect on [001], parting on [111]
{010} moderate, {100} imperfect
Mohs Hardness
2.5-2.75
6.5-7
Chemical Composition
PbS
Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Galena and Fayalite Chemical Formula
While comparing Galena and Fayalite 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 Fayalite chemical formula.
- Chemical formula of Galena- PbS
- Chemical formula of Fayalite- Fe 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Galena and Fayalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Galena and Fayalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Fayalite Optical Properties during the identification of gemstone. Specific gravity of Galena is 4.392 whereas that of Fayalite is 4.392.