Vivianite and Aragonite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Dilute acid
Durability
Not Available
Not Available
Specific Gravity
2.64-2.70
2.93-2.96
Fracture
(e.g. graphite).
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
Cleavage
{010} Perfect
Distinct on {010}, imperfect {110} and {011}
Mohs Hardness
Not Available
3.5-4
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Vivianite and Aragonite Chemical Formula
While comparing Vivianite and Aragonite 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 Aragonite chemical formula.
- Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Vivianite and Aragonite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vivianite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.