Holmquistite and Brookite Physical Properties

Holmquistite

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

2.95-3.133.87-4.14

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

{210} Perfect

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

1.7 Mohs Hardness

5-65.5-6

2 10

1.8 Chemical Composition

Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(OH) 2Anthony et al , Handbook of mineralogy (2001)

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

Holmquistite and Brookite Chemical Formula

While comparing Holmquistite 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 Holmquistite and Brookite chemical formula.

Chemical formula of Holmquistite- Li 2[(Mg,Fe2+ ) 3Al 2]Si 8O 22(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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Holmquistite and Brookite Specific Gravity

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