Eudialyte and Astrophyllite Physical Properties
Tenacity
Brittle
Not Available
Solubility
H 2 SO 4
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.74-3.00
3.2-3.4
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009)
Uneven, Brittle, Metallic
Cleavage
Distinct on {0001} imperfect on {11 2 0}
Perfect on [001] imperfect on [100]
Chemical Composition
Na 4(Ca,Ce) 2(Fe,Mn,Y)ZrSi 8O 22(OH,Cl) 2Ulrich Henn and Claudio C.
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Eudialyte and Astrophyllite Chemical Formula
While comparing Eudialyte and Astrophyllite 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 Astrophyllite 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 Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Eudialyte and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Eudialyte and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Eudialyte and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Eudialyte is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.