Galena and Andalusite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
6.23
3.05-3.21
Fracture
Subconchoidal, Brittle, Metallic
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Cubic perfect on [001], parting on [111]
Good on {110}, poor on {100}
Mohs Hardness
2.5-2.75
7.5
Chemical Composition
PbS
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Galena and Andalusite Chemical Formula
While comparing Galena and Andalusite 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 Andalusite chemical formula.
- Chemical formula of Galena- PbS
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Galena and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Galena and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Galena and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Galena is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.