Thomsonite and Ludlamite Physical Properties
Specific Gravity
2.25-2.40
3.1-3.2
Cleavage
perfect on {010}; good on {100}
Vitreous, pearly on cleavage
Chemical Composition
NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Thomsonite and Ludlamite Chemical Formula
While comparing Thomsonite 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 Thomsonite and Ludlamite chemical formula.
- Chemical formula of Thomsonite- NaCa 2Al 5Si 5O 20 · 6H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Ludlamite- (Fe2+ ,Mg,Mn2+ ) 3(PO 4) 2 · 4H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Thomsonite and Ludlamite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Thomsonite and Ludlamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Thomsonite and Ludlamite Optical Properties during the identification of gemstone. Specific gravity of Thomsonite is 3.1-3.2 whereas that of Ludlamite is 3.1-3.2.