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Vivianite
Vivianite

Siderite
Siderite



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Vivianite
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Vivianite and Siderite Physical Properties

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
2.64-2.70
3.83-3.89
1.5 Fracture
(e.g. graphite).
Uneven, Conchoidal, UnevenArthur Thomas, Brittle
1.6 Cleavage
{010} Perfect
Perfect on {01 1 1}
1.7 Mohs Hardness
Not Available
3.5-4.5
1.8 Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Vivianite and Siderite Chemical Formula

While comparing Vivianite 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 Vivianite and Siderite chemical formula.

  • Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
  • Chemical formula of Siderite- Fe2+ CO 3Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Vivianite and Siderite Specific Gravity

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