Blue John and Phosphosiderite Physical Properties

Blue John and Phosphosiderite Chemical Formula

While comparing Blue John and Phosphosiderite 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 Blue John and Phosphosiderite chemical formula.

• Chemical formula of Blue John- CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)
• Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

Blue John and Phosphosiderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Blue John and Phosphosiderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Blue John and Phosphosiderite Optical Properties during the identification of gemstone. Specific gravity of Blue John is 2.74-2.76 whereas that of Phosphosiderite is 2.74-2.76.