Alunite and Celestine Physical Properties
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.6-2.9
3.90-4.00
Fracture
Conchoidal, Uneven
Gemstones (2009), UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
On {0001}, perfect
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
3.5-4
3-3.5
Chemical Composition
KAl3(SO4)2(OH)6
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Alunite and Celestine Chemical Formula
While comparing Alunite and Celestine 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 Celestine chemical formula.
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
- Chemical formula of Celestine- SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Alunite and Celestine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Alunite and Celestine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Celestine Optical Properties during the identification of gemstone. Specific gravity of Alunite is 3.90-4.00 whereas that of Celestine is 3.90-4.00.