Hexagonite and Astrophyllite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.98-3.03
  
3.2-3.4
  
Fracture
Uneven
  
Uneven, Brittle, Metallic
  
Cleavage
[110] perfect; [010] distinct
  
Perfect on [001] imperfect on [100]
  
Mohs Hardness
5-6
  
3
  
Chemical Composition
Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
  
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
  
Hexagonite and Astrophyllite Chemical Formula
While comparing Hexagonite and Astrophyllite 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 Hexagonite and Astrophyllite chemical formula.
- Chemical formula of Hexagonite- Ca 2Mg 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Hexagonite and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hexagonite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hexagonite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Hexagonite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.