Eudialyte and Afghanite Physical Properties
Tenacity
Brittle
Not Available
Solubility
H 2 SO 4
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.74-3.00
2.55-2.65
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle, Conchoidal, Brittle
Cleavage
Distinct on {0001} imperfect on {11 2 0}
Perfect {10 1 0}
Mohs Hardness
5-5.5
5.5-6
Chemical Composition
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Eudialyte and Afghanite Chemical Formula
While comparing Eudialyte and Afghanite 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 Afghanite 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 Afghanite- (Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)
Eudialyte and Afghanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Eudialyte and Afghanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Eudialyte and Afghanite Optical Properties during the identification of gemstone. Specific gravity of Eudialyte is 2.55-2.65 whereas that of Afghanite is 2.55-2.65.