Sodalite and Ludlamite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Soluble
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.15-2.40
3.1-3.2
Fracture
Conchoidal, Uneven, UnevenArthur Thomas, Brittle
UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)
Cleavage
Poor on {110}
Vitreous, pearly on cleavage
Chemical Composition
Na8Al6Si6O24Cl2
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sodalite and Ludlamite Chemical Formula
While comparing Sodalite 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 Sodalite and Ludlamite chemical formula.
- Chemical formula of Sodalite- Na8Al6Si6O24Cl2
- Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Sodalite and Ludlamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sodalite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sodalite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Sodalite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.