Zinnwaldite and Bustamite Physical Properties

Zinnwaldite

Bustamite

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1 Physical Properties

1.1 Tenacity

Elastic

Not Available

1.2 Solubility

Not Available

Partly soluble in HCl.

1.3 Durability

Not Available

1.4 Specific Gravity

2.9-3.13.32-3.43

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

Perfect basal {001}

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

1.7 Mohs Hardness

3.5-4.05.5-6

2 10

1.8 Chemical Composition

Not Available

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

Zinnwaldite and Bustamite Chemical Formula

While comparing Zinnwaldite 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 Zinnwaldite and Bustamite chemical formula.

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

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Zinnwaldite and Bustamite Specific Gravity

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