Dumortierite and Pyrrhotite Physical Properties

Dumortierite

Pyrrhotite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.414.58-4.65

1 7.18

1.5 Fracture

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

Uneven

1.6 Cleavage

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

Absent

1.7 Mohs Hardness

7-8.53.5-4.5

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

Not Available

Dumortierite and Pyrrhotite Chemical Formula

While comparing Dumortierite and Pyrrhotite 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 Dumortierite and Pyrrhotite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Dumortierite and Pyrrhotite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Pyrrhotite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Pyrrhotite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 4.58-4.65 whereas that of Pyrrhotite is 4.58-4.65.