Siderite and Povondraite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.83-3.89
  
3.26
  
Fracture
Uneven, Conchoidal, UnevenArthur Thomas, Brittle
  
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001)
  
Cleavage
Perfect on {01 1 1}
  
None
  
Mohs Hardness
3.5-4.5
  
Not Available
  
Chemical Composition
Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
  
Siderite and Povondraite Chemical Formula
While comparing Siderite and Povondraite 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 Povondraite chemical formula.
- Chemical formula of Siderite- Fe2+ CO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
- Chemical formula of Povondraite- NaFe3+3Fe3+6(BO 3) 3Si 6O 18(O,OH) 4Anthony et al , Handbook of Mineralogy (2001)
Siderite and Povondraite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Siderite and Povondraite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Siderite and Povondraite Optical Properties during the identification of gemstone. Specific gravity of Siderite is 3.26 whereas that of Povondraite is 3.26.