Dravite and Wavellite Physical Properties
Specific Gravity
3.03-3.18
2.36
Fracture
Uneven, Irregular, Conchoidal
Uneven, Subconchoidal, Fibrous
Cleavage
{???} Indistinct
[110] perfect, [101] good, [010] distinct
Mohs Hardness
7-7.5
3.5-4
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dravite and Wavellite Chemical Formula
While comparing Dravite and Wavellite 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 Wavellite 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)
- Chemical formula of Wavellite- Al 3(PO 4) 2(OH,F) 3 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dravite and Wavellite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dravite and Wavellite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Wavellite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.36 whereas that of Wavellite is 2.36.