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Mottramite
Mottramite

Bustamite
Bustamite



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Mottramite
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Bustamite

Mottramite and Bustamite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
Partly soluble in HCl.

Durability

-
-

Specific Gravity

5.93.32-3.43
1 7.18
👆🏻

Fracture

Sub-Conchoidal
Conchoidal

Cleavage

None observed
{100} perfect; {110} and {1 1 0} good; {010} poor

Mohs Hardness

35.5-6
2 10
👆🏻

Chemical Composition

PbCu(VO4)(OH)
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mottramite and Bustamite Chemical Formula

While comparing Mottramite and Bustamite 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 Bustamite chemical formula.

  • Chemical formula of Mottramite- PbCu(VO4)(OH)
  • Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Mottramite and Bustamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Mottramite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.