Adamite and Poudretteite Physical Properties

Adamite

Poudretteite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.32-4.48

2.51-2.53

1.5 Fracture

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

Conchoidal, Splintery

1.6 Cleavage

{101}, good; {010}, poor

None

1.7 Mohs Hardness

3.5

1.8 Chemical Composition

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

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Adamite and Poudretteite Chemical Formula

While comparing Adamite and Poudretteite 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 Poudretteite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Blue Gemstones

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Adamite and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Adamite and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Adamite and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Adamite is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.