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Plumbogummite
Plumbogummite

Bustamite
Bustamite



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Plumbogummite
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Bustamite

Plumbogummite and Bustamite Physical Properties

Physical Properties

Tenacity

Brittle
-

Solubility

Soluble
Partly soluble in HCl.

Durability

-
-

Specific Gravity

4.0143.32-3.43
1 7.18
👆🏻

Fracture

Uneven, Conchoidal
Conchoidal

Cleavage

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

Mohs Hardness

4-55.5-6
2 10
👆🏻

Chemical Composition

PbAl3(PO4)(SO4)(OH)6
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Plumbogummite and Bustamite Chemical Formula

While comparing Plumbogummite 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 Plumbogummite and Bustamite chemical formula.

  • Chemical formula of Plumbogummite- PbAl3(PO4)(SO4)(OH)6
  • Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Plumbogummite and Bustamite Specific Gravity

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