Dravite and Cinnabar Physical Properties
Tenacity
Not Available
Slightly sectile
Solubility
Not Available
1.04 x 10−25 g per 100 ml water (Ksp at 25°C = 2 x 10−32)
Durability
Not Available
Not Available
Specific Gravity
3.03-3.18
2
Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Uneven, Uneven, Gemstones (2009), Brittle
Cleavage
{???} Indistinct
Prismatic {10 1 0}, perfect
Mohs Hardness
7-7.5
2-2.5
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dravite and Cinnabar Chemical Formula
While comparing Dravite and Cinnabar 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 Cinnabar 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 Cinnabar- HgSMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Dravite and Cinnabar Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dravite and Cinnabar Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Cinnabar Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2 whereas that of Cinnabar is 2.