Adamite and Vivianite Physical Properties

Adamite

Vivianite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.32-4.482.64-2.70

1 7.18

1.5 Fracture

Uneven, Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven, Subconchoidal, Brittle, Metallic, Brittle, Metallic

(e.g. graphite).

1.6 Cleavage

{101}, good; {010}, poor

{010} Perfect

1.7 Mohs Hardness

3.5Not Available

2 10

1.8 Chemical Composition

Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

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

Adamite and Vivianite Chemical Formula

While comparing Adamite 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 Adamite and Vivianite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Vivianite- Fe 3(PO 4) 2 8H 2OUlrich Henn and Claudio C.

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Adamite and Vivianite Specific Gravity

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