Andalusite and Fluorite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
slightly water soluble and in hot hydrochloric acid
Durability
Not Available
Not Available
Specific Gravity
3.05-3.21
3.00-3.25
Fracture
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
Good on {110}, poor on {100}
Octahedral, perfect on {111}, parting on {011}
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
CaF2
Andalusite and Fluorite Chemical Formula
While comparing Andalusite and Fluorite 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 Andalusite and Fluorite chemical formula.
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
- Chemical formula of Fluorite- CaF2
Andalusite and Fluorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andalusite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andalusite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Andalusite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.