Vivianite and Gahnospinel Physical Properties

Vivianite

Gahnospinel

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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

2.64-2.703.65-4.55

1 7.18

1.5 Fracture

(e.g. graphite).

ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

{010} Perfect

None, but may exhibit slight parting

1.7 Mohs Hardness

Not Available7.5-8

2 10

1.8 Chemical Composition

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

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

Vivianite and Gahnospinel Chemical Formula

While comparing Vivianite and Gahnospinel 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 Gahnospinel chemical formula.

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

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Vivianite and Gahnospinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Gahnospinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Gahnospinel Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 3.65-4.55 whereas that of Gahnospinel is 3.65-4.55.