Eudialyte and Opal Physical Properties
Tenacity
Brittle
BrittleWalter Schumann
Solubility
H 2 SO 4
hot salt water
Durability
Not Available
Not Available
Specific Gravity
2.74-3.00
1.98-2.25
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Brittle
Cleavage
Distinct on {0001} imperfect on {11 2 0}
None
Mohs Hardness
5-5.5
5-6.5
Chemical Composition
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
SiO2 · nH2O
Eudialyte and Opal Chemical Formula
While comparing Eudialyte and Opal 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 Opal 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 Opal- SiO2 · nH2O
Eudialyte and Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Eudialyte and Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Eudialyte and Opal Optical Properties during the identification of gemstone. Specific gravity of Eudialyte is 1.98-2.25 whereas that of Opal is 1.98-2.25.