Quartz and Andalusite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.65
3.05-3.21
Fracture
Conchoidal, Conchoidal, Brittle, Gems
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
{0110} Indistinct
Good on {110}, poor on {100}
Chemical Composition
SiO2
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Quartz and Andalusite Chemical Formula
While comparing Quartz 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 Quartz and Andalusite chemical formula.
- Chemical formula of Quartz- SiO2
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Quartz and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Quartz and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Quartz and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Quartz is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.