Achroite and Eudialyte Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
H 2 SO 4
Durability
Not Available
Not Available
Specific Gravity
2.90-3.40
2.74-3.00
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
Uneven, UnevenArthur Thomas, Gemstones (2009)
Cleavage
Not Available
Distinct on {0001} imperfect on {11 2 0}
Mohs Hardness
7-7.5
5-5.5
Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
Achroite and Eudialyte Chemical Formula
While comparing Achroite 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 Achroite and Eudialyte chemical formula.
- Chemical formula of Achroite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
- Chemical formula of Eudialyte- Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
Achroite and Eudialyte Specific Gravity
Another important criteria for qualitative analysis of gemstones is Achroite and Eudialyte Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Achroite and Eudialyte Optical Properties during the identification of gemstone. Specific gravity of Achroite is 2.74-3.00 whereas that of Eudialyte is 2.74-3.00.