Siderite and Verdelite Physical Properties
Specific Gravity
3.83-3.89
2.90-3.40
Fracture
Uneven, Conchoidal
Conchoidal
Cleavage
Perfect on {01 1 1}
Indiscernible
Mohs Hardness
3.5-4.5
7-7.5
Chemical Composition
Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Siderite and Verdelite Chemical Formula
While comparing Siderite and Verdelite 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 Siderite and Verdelite chemical formula.
- Chemical formula of Siderite- Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Verdelite- Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.
Siderite and Verdelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Siderite and Verdelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Siderite and Verdelite Optical Properties during the identification of gemstone. Specific gravity of Siderite is 2.90-3.40 whereas that of Verdelite is 2.90-3.40.