Dumortierite and Brookite Physical Properties

Dumortierite

Brookite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.26-3.413.87-4.14

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

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

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

1.7 Mohs Hardness

7-8.55.5-6

2 10

1.8 Chemical Composition

AlAl₆O₃BSi₃O₁₈

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

Dumortierite and Brookite Chemical Formula

While comparing Dumortierite and Brookite 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 Brookite chemical formula.

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

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Dumortierite and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dumortierite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dumortierite and Brookite Optical Properties during the identification of gemstone. Specific gravity of Dumortierite is 3.87-4.14 whereas that of Brookite is 3.87-4.14.