Hardystonite and Astrophyllite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
3.396-3.443
3.2-3.4
Fracture
Brittle, Metallic
Uneven, Brittle, Metallic
Cleavage
[001] good, [100] and [110] fair
Perfect on [001] imperfect on [100]
Chemical Composition
Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Hardystonite and Astrophyllite Chemical Formula
While comparing Hardystonite 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 Hardystonite and Astrophyllite chemical formula.
- Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Hardystonite and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hardystonite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hardystonite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Hardystonite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.