Shattuckite and Alunite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
3.80-4.15
2.6-2.9
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Uneven
Cleavage
perfect along [010] and [100]
On {0001}, perfect
Mohs Hardness
3.5-4
3.5-4
Chemical Composition
Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KAl3(SO4)2(OH)6
Shattuckite and Alunite Chemical Formula
While comparing Shattuckite 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 Shattuckite and Alunite chemical formula.
- Chemical formula of Shattuckite- Cu 5(SiO 3) 4(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
Shattuckite and Alunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Shattuckite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Shattuckite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Shattuckite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.