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Vivianite
Vivianite

Grossular
Grossular



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Vivianite
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Vivianite and Grossular Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Not Available
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
2.64-2.70
3.55-3.73
1.5 Fracture
(e.g. graphite).
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
1.6 Cleavage
{010} Perfect
none
1.7 Mohs Hardness
Not Available
7-7.5
1.8 Chemical Composition
Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Vivianite and Grossular Chemical Formula

While comparing Vivianite and Grossular 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 Grossular chemical formula.

  • Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
  • Chemical formula of Grossular- Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Vivianite and Grossular Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Grossular Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Grossular Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.55-3.73 whereas that of Grossular is 3.55-3.73.