Phlogopite and Childrenite Physical Properties
Tenacity
Tough
  
Not Available
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.78-2.85
  
3.06-3.25
  
Fracture
None, Uneven
  
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
  
Cleavage
Perfect basal (001)
  
Poor/indistinct on {100}
  
Mohs Hardness
2-2.5
  
4.5-5
  
Chemical Composition
Not Available
  
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
  
Phlogopite and Childrenite Chemical Formula
While comparing Phlogopite and Childrenite 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 Phlogopite and Childrenite chemical formula.
>- Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Phlogopite and Childrenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Phlogopite and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Phlogopite and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Phlogopite is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.