Dravite and Gahnospinel Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.03-3.18
3.65-4.55
Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
ConchoidalArthur Thomas, Gemstones (2009)
Cleavage
{???} Indistinct
None, but may exhibit slight parting
Mohs Hardness
7-7.5
7.5-8
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Dravite and Gahnospinel Chemical Formula
While comparing Dravite and Gahnospinel 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 Gahnospinel 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 Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Dravite and Gahnospinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dravite and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Dravite is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.