Apophyllite KF and Andalusite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.33-2.37
3.05-3.21
Fracture
Uneven, Brittle, Uneven, Brittle, Uneven
Uneven, Subconchoidal, Uneven, Subconchoidal, Splintery, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {001}, imperfect on {110}
Good on {110}, poor on {100}
Chemical Composition
(K,Na)Ca4Si8O20(F,OH)•8(H2O)
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Apophyllite KF and Andalusite Chemical Formula
While comparing Apophyllite KF 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 Apophyllite KF and Andalusite chemical formula.
- Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
- Chemical formula of Andalusite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
Apophyllite KF and Andalusite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apophyllite KF and Andalusite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite KF and Andalusite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite KF is 3.05-3.21 whereas that of Andalusite is 3.05-3.21.