Petalite and Scolecite Physical Properties
Solubility
insoluble
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.40
2.20-2.23
Fracture
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Irregular/uneven, UnevenAnthony et al, Handbook of mineralogy (2001), Brittle, Uneven
Cleavage
Perfect on {001}, poor on {201} with 38.5° angle between the two
Perfect on {110} and {1 1 0}
Mohs Hardness
6-6.5
5-5.5
Chemical Composition
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.
Petalite and Scolecite Chemical Formula
While comparing Petalite and Scolecite 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 Petalite and Scolecite chemical formula.
- Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Scolecite- CaAl 2Si 3O 10 · 3H 2OUlrich Henn and Claudio C.
Petalite and Scolecite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Petalite and Scolecite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Petalite and Scolecite Optical Properties during the identification of gemstone. Specific gravity of Petalite is 2.20-2.23 whereas that of Scolecite is 2.20-2.23.