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Grandidierite
Grandidierite

Brookite
Brookite



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Grandidierite
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Brookite

Grandidierite and Brookite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.85-3.00
Uneven
Perfect
7.5
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.
 
Brittle
-
-
3.87-4.14
Subconchoidal, Conchoidal
Poor on {120}, in traces on {001}
5.5-6
TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Grandidierite and Brookite Chemical Formula

While comparing Grandidierite 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 Grandidierite and Brookite chemical formula.

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Grandidierite and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite Vs Brookite during the identification of gemstone. Specific gravity of Grandidierite is whereas that of Brookite is .