Alunite and Augite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.6-2.9
3.19-3.56
Fracture
Conchoidal, Uneven
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
Cleavage
On {0001}, perfect
{110} Perfect, {010} Indistinct
Mohs Hardness
3.5-4
5.5-6
Chemical Composition
KAl3(SO4)2(OH)6
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Alunite and Augite Chemical Formula
While comparing Alunite and Augite 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 Alunite and Augite chemical formula.
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
- Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Alunite and Augite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Alunite and Augite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Augite Optical Properties during the identification of gemstone. Specific gravity of Alunite is 3.19-3.56 whereas that of Augite is 3.19-3.56.