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Spinel
Spinel

Plumbogummite
Plumbogummite



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Spinel
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Plumbogummite

Spinel and Plumbogummite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
none
Soluble
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.64-3.66
4.014
1.5 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Conchoidal
1.6 Cleavage
None, but may exhibit slight parting
None
1.7 Mohs Hardness
8
4-5
1.8 Chemical Composition
MgAl2O4
Not Available

Spinel and Plumbogummite Chemical Formula

While comparing Spinel and Plumbogummite 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 Spinel and Plumbogummite chemical formula.

  • Chemical formula of Spinel- MgAl2O4
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Spinel and Plumbogummite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Plumbogummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Plumbogummite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 4.014 whereas that of Plumbogummite is 4.014.