Alunite and Watermelon Tourmaline Physical Properties
Tenacity
Brittle
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.6-2.9
2.90-3.40
Fracture
Conchoidal, Uneven
Uneven, Conchoidal, Uneven, Irregular, Conchoidal, Management Team (2012)
Cleavage
On {0001}, perfect
Not Available
Mohs Hardness
3.5-4
7-7.5
Chemical Composition
KAl3(SO4)2(OH)6
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Alunite and Watermelon Tourmaline Chemical Formula
While comparing Alunite and Watermelon Tourmaline 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 Watermelon Tourmaline chemical formula.
- Chemical formula of Alunite- KAl3(SO4)2(OH)6
- Chemical formula of Watermelon Tourmaline- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Alunite and Watermelon Tourmaline Specific Gravity
Another important criteria for qualitative analysis of gemstones is Alunite and Watermelon Tourmaline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alunite and Watermelon Tourmaline Optical Properties during the identification of gemstone. Specific gravity of Alunite is 2.90-3.40 whereas that of Watermelon Tourmaline is 2.90-3.40.