Nephrite and Apophyllite KF Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.90-3.10
2.33-2.37
Fracture
Splintery, Granular, Splintery, Granular, Gemstones (2009)
Uneven, Brittle, Uneven, Brittle, Uneven
Cleavage
Not Available
Perfect on {001}, imperfect on {110}
Mohs Hardness
6-6.5
4.5-5
Chemical Composition
Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
(K,Na)Ca4Si8O20(F,OH)•8(H2O)
Nephrite and Apophyllite KF Chemical Formula
While comparing Nephrite and Apophyllite KF 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 Nephrite and Apophyllite KF chemical formula.
- Chemical formula of Nephrite- Ca 2(Mg,Fe) 5(OH) 2Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
Nephrite and Apophyllite KF Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nephrite and Apophyllite KF Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nephrite and Apophyllite KF Optical Properties during the identification of gemstone. Specific gravity of Nephrite is 2.33-2.37 whereas that of Apophyllite KF is 2.33-2.37.