Shigaite and Dumortierite Physical Properties

Shigaite

Dumortierite

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1 Physical Properties

1.1 Tenacity

Moderately ﬂexible

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.323.26-3.41

1 7.18

1.5 Fracture

Flexible Flexible fragments.

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

1.6 Cleavage

Perfect on {0001}

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

1.7 Mohs Hardness

27-8.5

2 10

1.8 Chemical Composition

Not Available

AlAl₆O₃BSi₃O₁₈

Shigaite and Dumortierite Chemical Formula

While comparing Shigaite 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 Shigaite and Dumortierite chemical formula.

Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Shigaite and Dumortierite Specific Gravity

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