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Iolite
Iolite

Siderite
Siderite



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Iolite
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Siderite

Iolite and Siderite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.6-2.73.83-3.89
Amber
1 7.18
1.5 Fracture
Not Available
Uneven, Conchoidal, UnevenArthur Thomas, Brittle
1.6 Cleavage
3,1
Perfect on {01 1 1}
1.7 Mohs Hardness
7-7.53.5-4.5
Amber
2 10
1.8 Chemical Composition
Mg2Al4Si5O18
Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Iolite and Siderite Chemical Formula

While comparing Iolite and Siderite 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 Iolite and Siderite chemical formula.

  • Chemical formula of Iolite- Mg2Al4Si5O18
  • Chemical formula of Siderite- Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Iolite and Siderite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Siderite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Siderite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.83-3.89 whereas that of Siderite is 3.83-3.89.