Bustamite and Norbergite Physical Properties

Bustamite

Norbergite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Partly soluble in HCl.

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.32-3.433.177

1 7.18

1.5 Fracture

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

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

1.6 Cleavage

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

{???} Distinct

1.7 Mohs Hardness

5.5-66-6.5

2 10

1.8 Chemical Composition

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

Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Bustamite and Norbergite Chemical Formula

While comparing Bustamite and Norbergite 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 Norbergite chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Compare Red Gemstones

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Bustamite and Norbergite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Norbergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Norbergite Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.177 whereas that of Norbergite is 3.177.