Gahnospinel and Vivianite Physical Properties

Gahnospinel

Vivianite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.65-4.552.64-2.70

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009)

(e.g. graphite).

1.6 Cleavage

None, but may exhibit slight parting

{010} Perfect

1.7 Mohs Hardness

7.5-8Not Available

2 10

1.13 Chemical Composition

(Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)

Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Gahnospinel and Vivianite Chemical Formula

While comparing Gahnospinel and Vivianite 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 Gahnospinel and Vivianite chemical formula.

Chemical formula of Gahnospinel- (Mg,Zn)Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

Compare Blue Gemstones

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Gahnospinel Vs Linarite

Gahnospinel Vs Jeremejevite

Gahnospinel and Vivianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gahnospinel and Vivianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gahnospinel and Vivianite Optical Properties during the identification of gemstone. Specific gravity of Gahnospinel is 2.64-2.70 whereas that of Vivianite is 2.64-2.70.