Adamite and Dumortierite Physical Properties

Adamite

Dumortierite

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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

3.26-3.41

1.5 Fracture

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

Fibrous, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references

1.6 Cleavage

{101}, good; {010}, poor

Distinct on {100}, poor on {110}; parting on {001}

1.7 Mohs Hardness

3.5

7-8.5

1.8 Chemical Composition

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

AlAl₆O₃BSi₃O₁₈

Adamite and Dumortierite Chemical Formula

While comparing Adamite and Dumortierite 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 Dumortierite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Adamite and Dumortierite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Adamite and Dumortierite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Adamite and Dumortierite Optical Properties during the identification of gemstone. Specific gravity of Adamite is 3.26-3.41 whereas that of Dumortierite is 3.26-3.41.