Londonite and Adamite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.34
  
4.32-4.48
  
Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic
  
Cleavage
None
  
{101}, good; {010}, poor
  
Mohs Hardness
Not Available
  
3.5
  
Chemical Composition
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
  
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
  
Londonite and Adamite Chemical Formula
While comparing Londonite and Adamite 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 Londonite and Adamite chemical formula.
- Chemical formula of Londonite- (Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Londonite and Adamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Londonite and Adamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Londonite and Adamite Optical Properties during the identification of gemstone. Specific gravity of Londonite is 4.32-4.48 whereas that of Adamite is 4.32-4.48.