Ettringite and Eudialyte Physical Properties
Tenacity
Not Available
Brittle
Solubility
Partially soluble in water
H 2 SO 4
Durability
Not Available
Not Available
Specific Gravity
1.77
2.74-3.00
Fracture
Not Available
Uneven, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Perfect on {10 1 0}
Distinct on {0001} imperfect on {11 2 0}
Mohs Hardness
2-2.5
5-5.5
Chemical Composition
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
Ettringite and Eudialyte Chemical Formula
While comparing Ettringite and Eudialyte 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 Ettringite and Eudialyte chemical formula.
- Chemical formula of Ettringite- Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Eudialyte- Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
Ettringite and Eudialyte Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ettringite and Eudialyte Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ettringite and Eudialyte Optical Properties during the identification of gemstone. Specific gravity of Ettringite is 2.74-3.00 whereas that of Eudialyte is 2.74-3.00.