Andradite and Brookite Physical Properties

Andradite

Brookite

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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

3.70-4.103.87-4.14

1 7.18

1.5 Fracture

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

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

1.6 Cleavage

none

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

1.7 Mohs Hardness

6.5-75.5-6

2 10

1.8 Chemical Composition

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

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

Andradite and Brookite Chemical Formula

While comparing Andradite 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 Andradite and Brookite chemical formula.

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

Compare Green Gemstones

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Andradite Vs Augite

Andradite and Brookite Specific Gravity

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