Brookite and Grossular Physical Properties

Brookite

Grossular

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.87-4.143.55-3.73

1 7.18

2.5 Fracture

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

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

2.6 Cleavage

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

none

2.7 Mohs Hardness

5.5-67-7.5

2 10

2.11 Chemical Composition

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

Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Brookite and Grossular Chemical Formula

While comparing Brookite and Grossular 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 Grossular chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Grossular- Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Brookite and Grossular Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Grossular Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Grossular Optical Properties during the identification of gemstone. Specific gravity of Brookite is 3.55-3.73 whereas that of Grossular is 3.55-3.73.