Charoite and Alunite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.54-2.78
2.6-2.9
Fracture
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Uneven
Cleavage
Good in three directions
On {0001}, perfect
Chemical Composition
K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
KAl3(SO4)2(OH)6
Charoite and Alunite Chemical Formula
While comparing Charoite 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 Charoite and Alunite chemical formula.
- Chemical formula of Charoite- K(Ca,Na) 2Si 4O 10(OH,F) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
Charoite and Alunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Charoite and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Charoite and Alunite Optical Properties during the identification of gemstone. Specific gravity of Charoite is 2.6-2.9 whereas that of Alunite is 2.6-2.9.