Bustamite and Almandine Physical Properties

Bustamite

Almandine

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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

3.32-3.433.95-4.30

1 7.18

1.5 Fracture

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

Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

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

none

1.7 Mohs Hardness

5.5-67-7.5

2 10

1.8 Chemical Composition

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

Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Bustamite and Almandine Chemical Formula

While comparing Bustamite and Almandine 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 Almandine chemical formula.

Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Bustamite and Almandine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Almandine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Almandine Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.95-4.30 whereas that of Almandine is 3.95-4.30.