Hardystonite and Dumortierite Physical Properties

Hardystonite

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

3.396-3.4433.26-3.41

1 7.18

1.5 Fracture

Brittle, Metallic

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

1.6 Cleavage

[001] good, [100] and [110] fair

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

1.7 Mohs Hardness

3-47-8.5

2 10

1.8 Chemical Composition

Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)

AlAl₆O₃BSi₃O₁₈

Hardystonite and Dumortierite Chemical Formula

While comparing Hardystonite 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 Hardystonite and Dumortierite chemical formula.

Chemical formula of Hardystonite- Ca 2ZnSi 2O 7Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Hardystonite and Dumortierite Specific Gravity

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