Oligoclase and Vivianite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.62-2.67
2.64-2.70
Fracture
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
(e.g. graphite).
Cleavage
From the Greek, oligos and kasein, little cleavage.
{010} Perfect
Mohs Hardness
6-6.5
Not Available
Chemical Composition
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Oligoclase and Vivianite Chemical Formula
While comparing Oligoclase and Vivianite 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 Oligoclase and Vivianite chemical formula.
- Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Oligoclase and Vivianite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Oligoclase and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Oligoclase and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Oligoclase is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.