Brookite and Periclase Physical Properties

Brookite

Periclase

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.87-4.143.7-3.9

1 7.18

1.5 Fracture

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

Conchoidal, Brittle

1.6 Cleavage

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

{001} perfect; {111} imperfect, may exhibit parting on , {011}

1.7 Mohs Hardness

5.5-65.5-6

2 10

1.8 Chemical Composition

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

MgOMichael OâDonoghue , Gems, Sixth Edition (2006)

Brookite and Periclase Chemical Formula

While comparing Brookite and Periclase 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 Periclase chemical formula.

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

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Brookite and Periclase Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Periclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Periclase Optical Properties during the identification of gemstone. Specific gravity of Brookite is 3.7-3.9 whereas that of Periclase is 3.7-3.9.