Astrophyllite and Chlorapatite Physical Properties

Astrophyllite and Chlorapatite Chemical Formula

While comparing Astrophyllite and Chlorapatite 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 Chlorapatite 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 Chlorapatite- Ca 5(PO 4) 3ClAnthony et al , Handbook of mineralogy (2001)

Astrophyllite and Chlorapatite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Astrophyllite and Chlorapatite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Astrophyllite and Chlorapatite Optical Properties during the identification of gemstone. Specific gravity of Astrophyllite is 3.17-3.18 whereas that of Chlorapatite is 3.17-3.18.