Eudialyte and Sillimanite Physical Properties
Solubility
H 2 SO 4
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.74-3.00
3.20-3.26
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Splintery
Cleavage
Distinct on {0001} imperfect on {11 2 0}
{010} perfect
Mohs Hardness
5-5.5
6-7.5
Chemical Composition
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Eudialyte and Sillimanite Chemical Formula
While comparing Eudialyte and Sillimanite 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 Eudialyte and Sillimanite chemical formula.
- Chemical formula of Eudialyte- Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
- Chemical formula of Sillimanite- Al 2SiO 5Michael OâDonoghue , Gems, Sixth Edition (2006)
Eudialyte and Sillimanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Eudialyte and Sillimanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Eudialyte and Sillimanite Optical Properties during the identification of gemstone. Specific gravity of Eudialyte is 3.20-3.26 whereas that of Sillimanite is 3.20-3.26.