Sunstone and Astrophyllite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Not Available
Not Available
Specific Gravity
2.62-2.65
3.2-3.4
Fracture
Gemstones of the world (2001)
Uneven, Brittle, Metallic
Cleavage
001
Perfect on [001] imperfect on [100]
Chemical Composition
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Sunstone and Astrophyllite Chemical Formula
While comparing Sunstone 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 Sunstone and Astrophyllite chemical formula.
- Chemical formula of Sunstone- Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Sunstone and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Sunstone and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sunstone and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Sunstone is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.