Gedrite and Sylvite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.15-3.259
  
1.993
  
Fracture
Not Available
  
Uneven, Brittle
  
Cleavage
Gedrite Magnesiogedrite , Comments: Dark gray cleavage fragment of magnesiogedrite (gedrite). , Location: Bamble, Telemark, Norway. , Scale: See Image.
  
Perfect on [100], [010], [001]
  
Mohs Hardness
5.5-6
  
2.5
  
Chemical Composition
(Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
  
Not Available
  
Gedrite and Sylvite Chemical Formula
While comparing Gedrite and Sylvite 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 Gedrite and Sylvite chemical formula.
- Chemical formula of Gedrite- (Mg,Fe2+ ) 2[(Mg,Fe2+ ) 3Al 2](Si 6Al 2)O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)
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Gedrite and Sylvite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gedrite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gedrite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Gedrite is 1.993 whereas that of Sylvite is 1.993.