Apophyllite KF and Labradorite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.33-2.37
  
2.69-2.72
  
Fracture
Uneven, Brittle, Uneven, Brittle, Uneven
  
Uneven, Conchoidal, Gems, Sixth Edition (2006)
  
Cleavage
Perfect on {001}, imperfect on {110}
  
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
  
Mohs Hardness
4.5-5
  
6-6.5
  
Chemical Composition
(K,Na)Ca4Si8O20(F,OH)•8(H2O)
  
(Na,Ca)1-2Si3-2O8
  
Apophyllite KF and Labradorite Chemical Formula
While comparing Apophyllite KF and Labradorite 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 Labradorite chemical formula.
- Chemical formula of Apophyllite KF- (K,Na)Ca4Si8O20(F,OH)•8(H2O)
- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
Apophyllite KF and Labradorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Apophyllite KF and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apophyllite KF and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Apophyllite KF is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.