Astrophyllite and Serpentine Physical Properties

Astrophyllite and Serpentine Chemical Formula

While comparing Astrophyllite and Serpentine 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 Serpentine 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 Serpentine- H 4Mg 3Si 2O 9Walter Schumann , Gemstones of the world (2001) More from other references

Astrophyllite and Serpentine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Serpentine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Serpentine Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 2.44-2.62 whereas that of Serpentine is 2.44-2.62.