Gahnite and Bustamite Physical Properties

Gahnite

Bustamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

4.00-4.623.32-3.43

1 7.18

1.5 Fracture

Conchoidal, Uneven

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

1.6 Cleavage

Indistinct parting on [111]

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

1.7 Mohs Hardness

7.5-85.5-6

2 10

1.8 Chemical Composition

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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

Gahnite and Bustamite Chemical Formula

While comparing Gahnite 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 Gahnite and Bustamite chemical formula.

Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Compare Blue Gemstones

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Gahnite Vs Howlite

Gahnite and Bustamite Specific Gravity

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