Bertrandite and Brookite Physical Properties

Bertrandite

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

2.59-2.603.87-4.14

1 7.18

1.5 Fracture

Brittle, Metallic, Brittle, Metallic

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

1.6 Cleavage

{001} Perfect, {110} Distinct, {101} Distinct

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

1.7 Mohs Hardness

6-75.5-6

2 10

1.8 Chemical Composition

Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)

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

Bertrandite and Brookite Chemical Formula

While comparing Bertrandite 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 Bertrandite and Brookite chemical formula.

Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bertrandite and Brookite Specific Gravity

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