Pyrite and Astrophyllite Physical Properties
Solubility
insoluble in water
-
Specific Gravity
5.00-5.20
3.2-3.4
Fracture
Uneven, Conchoidal, ConchoidalWalter Schumann
Uneven
Cleavage
Indistinct on {001}; partings on {011} and {111}
Perfect on [001] imperfect on [100]
Chemical Composition
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
(K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Pyrite and Astrophyllite Chemical Formula
While comparing Pyrite 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 Pyrite and Astrophyllite chemical formula.
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Astrophyllite- (K,Na) 3(Fe2+ ,Mn) 7Ti 2Si 8O 24(O,OH) 7Anthony et al , Handbook of mineralogy (2001)
Pyrite and Astrophyllite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Pyrite and Astrophyllite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Pyrite and Astrophyllite Optical Properties during the identification of gemstone. Specific gravity of Pyrite is 3.2-3.4 whereas that of Astrophyllite is 3.2-3.4.