Vivianite and Aragonite Physical Properties

Vivianite

Aragonite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Dilute acid

1.3 Durability

Not Available

1.4 Specific Gravity

2.64-2.702.93-2.96

1 7.18

1.5 Fracture

(e.g. graphite).

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

{010} Perfect

Distinct on {010}, imperfect {110} and {011}

1.7 Mohs Hardness

Not Available3.5-4

2 10

1.8 Chemical Composition

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

CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Vivianite and Aragonite Chemical Formula

While comparing Vivianite and Aragonite 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 Aragonite chemical formula.

Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.
Chemical formula of Aragonite- CaCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

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Vivianite Vs Fancy Diamond

Vivianite Vs Zircon

Vivianite and Aragonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vivianite and Aragonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vivianite and Aragonite Optical Properties during the identification of gemstone. Specific gravity of Vivianite is 2.93-2.96 whereas that of Aragonite is 2.93-2.96.