Bytownite and Astrophyllite Physical Properties
Tenacity
Brittle
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.72-2.75
3.2-3.4
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
Uneven, Brittle, Metallic
Cleavage
Perfect on [001], good on [010], imperfect on [110]
Perfect on [001] imperfect on [100]
Chemical Composition
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Bytownite and Astrophyllite Chemical Formula
While comparing Bytownite 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 Bytownite and Astrophyllite chemical formula.
- Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Bytownite and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Bytownite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bytownite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Bytownite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.