Edenite and Adamite Physical Properties

Edenite

Adamite

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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

3.05-3.37

4.32-4.48

1.5 Fracture

Conchoidal, Brittle, Conchoidal

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

1.6 Cleavage

Good on (110)

{101}, good; {010}, poor

1.7 Mohs Hardness

5-6

3.5

1.8 Chemical Composition

NaCa2Mg5Si7AlO22(OH)2

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

Edenite and Adamite Chemical Formula

While comparing Edenite and Adamite 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 Edenite and Adamite chemical formula.

Chemical formula of Edenite- NaCa2Mg5Si7AlO22(OH)2
Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

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Edenite and Adamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Edenite and Adamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Edenite and Adamite Optical Properties during the identification of gemstone. Specific gravity of Edenite is 4.32-4.48 whereas that of Adamite is 4.32-4.48.