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Bustamite
Bustamite

Spinel
Spinel



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Bustamite
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Spinel

Bustamite and Spinel Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
Partly soluble in HCl.
none
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.32-3.433.64-3.66
Amber
1 7.18
1.5 Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
1.6 Cleavage
{100} perfect; {110} and {1 1 0} good; {010} poor
None, but may exhibit slight parting
1.7 Mohs Hardness
5.5-68
Amber
2 10
1.8 Chemical Composition
(Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
MgAl2O4

Bustamite and Spinel Chemical Formula

While comparing Bustamite and Spinel 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 Spinel chemical formula.

  • Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Spinel- MgAl2O4

Bustamite and Spinel Specific Gravity

Another important criteria for qualitative analysis of gemstones is Bustamite and Spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Bustamite and Spinel Optical Properties during the identification of gemstone. Specific gravity of Bustamite is 3.64-3.66 whereas that of Spinel is 3.64-3.66.