Piemontite and Brookite Physical Properties

Piemontite

Brookite

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Physical Properties

Tenacity

Brittle

Solubility

Durability

Specific Gravity

-99993.87-4.14

1 7.18

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Fracture

Uneven, Splintery

Subconchoidal, Conchoidal

Cleavage

[001] good, [100] distinct

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

Mohs Hardness

6-6.55.5-6

2 10

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Chemical Composition

Ca2Al3(SiO4)(Si2O7)O(OH)

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

Piemontite and Brookite Chemical Formula

While comparing Piemontite 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 Piemontite and Brookite chemical formula.

Chemical formula of Piemontite- Ca2Al3(SiO4)(Si2O7)O(OH)
Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Piemontite and Brookite Specific Gravity

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