Bustamite and Plumbogummite Physical Properties

Bustamite

Plumbogummite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Partly soluble in HCl.

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.434.014

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

Uneven, Conchoidal

1.6 Cleavage

{100} perfect; {110} and {1 1 0} good; {010} poor

None

1.7 Mohs Hardness

5.5-64-5

2 10

1.8 Chemical Composition

(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Not Available

Bustamite and Plumbogummite Chemical Formula

While comparing Bustamite and Plumbogummite 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 Bustamite and Plumbogummite chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Bustamite and Plumbogummite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Plumbogummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Plumbogummite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 4.014 whereas that of Plumbogummite is 4.014.