Vivianite and Calcite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Not Available
Not Available
Specific Gravity
2.64-2.70
2.67-2.73
Fracture
(e.g. graphite).
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
{010} Perfect
Perfect on [10 1 1] three directions with angle of 74° 55
Mohs Hardness
Not Available
3
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
CaCO 3Ulrich Henn and Claudio C.
Vivianite and Calcite Chemical Formula
While comparing Vivianite and Calcite 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 Calcite chemical formula.
- Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Calcite- CaCO 3Ulrich Henn and Claudio C.
Vivianite and Calcite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vivianite and Calcite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Calcite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 2.67-2.73 whereas that of Calcite is 2.67-2.73.