Adamite and Erythrite Physical Properties

Adamite

Erythrite

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1 Physical Properties

1.1 Tenacity

Brittle

Sectile

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.32-4.48

3.06

1.5 Fracture

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

Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

1.6 Cleavage

{101}, good; {010}, poor

Perfect on {010}; poor on {100} and { 1 02}.

1.7 Mohs Hardness

3.5

Not Available

1.8 Chemical Composition

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

Co3(AsO4)2•8(H2O)

Adamite and Erythrite Chemical Formula

While comparing Adamite and Erythrite 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 Erythrite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Erythrite- Co3(AsO4)2•8(H2O)

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Adamite and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Adamite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Adamite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Adamite is 3.06 whereas that of Erythrite is 3.06.