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Londonite and Dravite Physical Properties


Dravite and Londonite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.34   
3.03-3.18   

Fracture
ConchoidalAnthony et al, Handbook of mineralogy (2001), ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal   
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle   

Cleavage
None   
{???} Indistinct   

Mohs Hardness
Not Available   
7-7.5   

Chemical Composition
(Cs,K,Rb)Al 4Be 4(B,Be) 12O 28Anthony et al , Handbook of mineralogy (2001)   
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)   

Optical Properties >>
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Londonite and Dravite Chemical Formula

While comparing Londonite and Dravite 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 Dravite chemical formula.

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Londonite and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Londonite and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Londonite and Dravite Optical Properties during the identification of gemstone. Specific gravity of Londonite is 3.03-3.18 whereas that of Dravite is 3.03-3.18.

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