Andradite and Phlogopite Physical Properties
Tenacity
Brittle
  
Tough
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.70-4.10
  
2.78-2.85
  
Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
  
None, Uneven
  
Cleavage
none
  
Perfect basal (001)
  
Mohs Hardness
6.5-7
  
2-2.5
  
Chemical Composition
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  
Not Available
  
Andradite and Phlogopite Chemical Formula
While comparing Andradite and Phlogopite 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 Andradite and Phlogopite chemical formula.
- Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
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Andradite and Phlogopite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andradite and Phlogopite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite and Phlogopite Optical Properties during the identification of gemstone. Specific gravity of Andradite is 2.78-2.85 whereas that of Phlogopite is 2.78-2.85.