Vivianite and Pargasite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.64-2.70
3.04-3.26
Fracture
(e.g. graphite).
Splintery, Brittle, Uneven
Cleavage
{010} Perfect
{110} perfect
Mohs Hardness
Not Available
5-6
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Vivianite and Pargasite Chemical Formula
While comparing Vivianite and Pargasite 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 Vivianite and Pargasite chemical formula.
- Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Pargasite- NaCa 2(Mg 4Al)Si 6Al 2O 22(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Vivianite and Pargasite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vivianite and Pargasite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Pargasite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.04-3.26 whereas that of Pargasite is 3.04-3.26.