Montebrasite and Brookite Physical Properties

Montebrasite

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

2.98-3.103.87-4.14

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

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

1.6 Cleavage

{100} Perfect, {110} Good, {011} Distinct

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

1.7 Mohs Hardness

5.5-65.5-6

2 10

1.8 Chemical Composition

LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references

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

Montebrasite and Brookite Chemical Formula

While comparing Montebrasite 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 Montebrasite and Brookite chemical formula.

Chemical formula of Montebrasite- LiAl(PO 4)(OH,F)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Montebrasite and Brookite Specific Gravity

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