Phenakite and Fluorite Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
slightly water soluble and in hot hydrochloric acid
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.90-2.98
  
3.00-3.25
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001), Brittle
  
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
  
Cleavage
Distinct on {11 2 0}, imperfect on {10 1 1}
  
Octahedral, perfect on {111}, parting on {011}
  
Mohs Hardness
7.5-8
  
4
  
Chemical Composition
Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
CaF2
  
Phenakite and Fluorite Chemical Formula
While comparing Phenakite 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 Phenakite and Fluorite chemical formula.
- Chemical formula of Phenakite- Be 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Fluorite- CaF2
Phenakite and Fluorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phenakite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phenakite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Phenakite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.