Dravite and Sphene Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.03-3.18
  
Not Available
  
Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
  
Not Available
  
Cleavage
{???} Indistinct
  
Not Available
  
Mohs Hardness
7-7.5
  
Not Available
  
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
  
Not Available
  
Dravite and Sphene Chemical Formula
While comparing Dravite and Sphene 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 Dravite and Sphene chemical formula.
- Chemical formula of Dravite- Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
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Dravite and Sphene Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dravite and Sphene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Sphene Optical Properties during the identification of gemstone. Specific gravity of Dravite is Not Available whereas that of Sphene is Not Available.