Lapis lazuli and Phosphosiderite Physical Properties

Lapis lazuli and Phosphosiderite Chemical Formula

While comparing Lapis lazuli 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 Lapis lazuli and Phosphosiderite chemical formula.

• Chemical formula of Lapis lazuli- The chief constituent Lapis Lazuli is Lazurite, with the following chemical formula: (Na,Ca)₈Al₆Si₆O₂₄(S,SO)₄
• Chemical formula of Phosphosiderite- Fe3+ PO 4 · 2H 2OAnthony et al , Handbook of Mineralogy (2001)

Lapis lazuli and Phosphosiderite Specific Gravity

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