Vivianite and Ludlamite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.64-2.70
3.1-3.2
Fracture
(e.g. graphite).
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Cleavage
{010} Perfect
Vitreous, pearly on cleavage
Mohs Hardness
Not Available
3-4
Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Vivianite and Ludlamite Chemical Formula
While comparing Vivianite and Ludlamite 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 Ludlamite chemical formula.
- Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
- Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Vivianite and Ludlamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vivianite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.