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