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Mottramite
Mottramite

Brookite
Brookite



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Mottramite
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Brookite

Mottramite and Brookite Physical Properties

Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
-

Durability

-
-

Specific Gravity

5.93.87-4.14
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Subconchoidal, Conchoidal

Cleavage

None observed
Poor on {120}, in traces on {001}

Mohs Hardness

35.5-6
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mottramite and Brookite Chemical Formula

While comparing Mottramite 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 Mottramite and Brookite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Brookite- TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mottramite and Brookite Specific Gravity

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