Brookite and Natrolite Physical Properties

Brookite

Natrolite

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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

3.87-4.142.20-2.26

1 7.18

1.5 Fracture

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

Uneven, Brittle, Metallic, Gemstones (2009)

1.6 Cleavage

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

Perfect on {110}

1.7 Mohs Hardness

5.5-65-5.5

2 10

1.8 Chemical Composition

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

Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Brookite and Natrolite Chemical Formula

While comparing Brookite and Natrolite 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 Natrolite chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Natrolite- Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Brookite and Natrolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Natrolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Natrolite Optical Properties during the identification of gemstone. Specific gravity of Brookite is 2.20-2.26 whereas that of Natrolite is 2.20-2.26.