Adamite and Bertrandite Physical Properties

Adamite

Bertrandite

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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

4.32-4.48

2.59-2.60

1.5 Fracture

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

Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

{101}, good; {010}, poor

{001} Perfect, {110} Distinct, {101} Distinct

1.7 Mohs Hardness

3.5

6-7

1.8 Chemical Composition

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

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

Adamite and Bertrandite Chemical Formula

While comparing Adamite and Bertrandite 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 Bertrandite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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Adamite and Bertrandite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Adamite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Adamite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Adamite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.