Azurmalachite and Alunite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.70-3.95
2.6-2.9
Fracture
ConchoidalGemdat.org, Management Team (2012), ConchoidalGemdat.org, Management Team (2012)
Conchoidal, Uneven
Cleavage
1,1 basal.
On {0001}, perfect
Mohs Hardness
3.5-4
3.5-4
Chemical Composition
(Cu) 3(OH) 2(CO 3) 2 + Cu 2(CO 3)(OH) 2Gemdat.org , Management Team (2012)
KAl3(SO4)2(OH)6
Azurmalachite and Alunite Chemical Formula
While comparing Azurmalachite and Alunite 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 Azurmalachite and Alunite chemical formula.
- Chemical formula of Azurmalachite- (Cu) 3(OH) 2(CO 3) 2 + Cu 2(CO 3)(OH) 2Gemdat.org , Management Team (2012)
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
Azurmalachite and Alunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Azurmalachite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Azurmalachite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Azurmalachite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.