Petalite and Fluorite Physical Properties
Solubility
insoluble
slightly water soluble and in hot hydrochloric acid
Durability
Not Available
Not Available
Specific Gravity
2.40
3.00-3.25
Fracture
Subconchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
Subconchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
Cleavage
Perfect on {001}, poor on {201} with 38.5° angle between the two
Octahedral, perfect on {111}, parting on {011}
Chemical Composition
LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaF2
Petalite and Fluorite Chemical Formula
While comparing Petalite and Fluorite 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 Fluorite chemical formula.
- Chemical formula of Petalite- LiAlSi 4O 10Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Fluorite- CaF2
Petalite and Fluorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Petalite and Fluorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Petalite and Fluorite Optical Properties during the identification of gemstone. Specific gravity of Petalite is 3.00-3.25 whereas that of Fluorite is 3.00-3.25.