Brookite and Dumortierite Physical Properties

Brookite

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

3.87-4.143.26-3.41

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

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

1.6 Cleavage

Poor on {120}, in traces on {001}

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

1.7 Mohs Hardness

5.5-67-8.5

2 10

1.8 Chemical Composition

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

AlAl₆O₃BSi₃O₁₈

Brookite and Dumortierite Chemical Formula

While comparing Brookite 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 Brookite and Dumortierite chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Dumortierite- AlAl₆O₃BSi₃O₁₈

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Brookite and Dumortierite Specific Gravity

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