Adamite and Chalcedony Physical Properties

Adamite

Chalcedony

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.32-4.48

2.55-2.70

1.5 Fracture

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

Uneven, Splintery, Conchoidal, Uneven, Splintery, Conchoidal, UnevenWalter Schumann

1.6 Cleavage

{101}, good; {010}, poor

Absent

1.7 Mohs Hardness

3.5

6.5-7

1.8 Chemical Composition

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

SiO₂

Adamite and Chalcedony Chemical Formula

While comparing Adamite and Chalcedony 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 Chalcedony chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Chalcedony- SiO₂

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Adamite and Chalcedony Specific Gravity

Another important criteria for qualitative analysis of gemstones is Adamite and Chalcedony Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Adamite and Chalcedony Optical Properties during the identification of gemstone. Specific gravity of Adamite is 2.55-2.70 whereas that of Chalcedony is 2.55-2.70.