Alunite and Serendibite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.6-2.9
3.43-3.44
Fracture
Conchoidal, Uneven
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Cleavage
On {0001}, perfect
None Observed
Mohs Hardness
3.5-4
6.5-7
Chemical Composition
KAl3(SO4)2(OH)6
Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Alunite and Serendibite Chemical Formula
While comparing Alunite and Serendibite 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 Serendibite chemical formula.
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
- Chemical formula of Serendibite- Ca 2(Mg,Al) 6(Si,Al,B) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Alunite and Serendibite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Alunite and Serendibite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Serendibite Optical Properties during the identification of gemstone. Specific gravity of Alunite is 3.43-3.44 whereas that of Serendibite is 3.43-3.44.