Dravite and Atacamite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.03-3.18
3.745-3.776
Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle
Conchoidal, Conchoidal, Brittle
Cleavage
{???} Indistinct
Perfect on {010}, fair on {101}
Mohs Hardness
7-7.5
3-3.5
Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)
Cu2Cl(OH)3
Dravite and Atacamite Chemical Formula
While comparing Dravite and Atacamite 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 Atacamite 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 Atacamite- Cu2Cl(OH)3
Dravite and Atacamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Dravite and Atacamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Atacamite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 3.745-3.776 whereas that of Atacamite is 3.745-3.776.