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Spinel
Spinel

Hercynite
Hercynite



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Spinel
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Hercynite

Spinel and Hercynite Physical Properties

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1 Physical Properties
1.1 Tenacity
Not Available
Not Available
1.2 Solubility
none
Not Available
1.3 Durability
Not Available
Not Available
1.4 Specific Gravity
3.64-3.664.39
Amber
1 7.18
1.5 Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
ConchoidalGemdat.org, Uneven
1.6 Cleavage
None, but may exhibit slight parting
{111} Indistinct, {111} Indistinct, {111} Indistinct
1.7 Mohs Hardness
87.5-8
Amber
2 10
1.8 Chemical Composition
MgAl2O4
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Spinel and Hercynite Chemical Formula

While comparing Spinel and Hercynite 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 Hercynite chemical formula.

  • Chemical formula of Spinel- MgAl2O4
  • Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Spinel and Hercynite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Spinel and Hercynite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spinel and Hercynite Optical Properties during the identification of gemstone. Specific gravity of Spinel is 4.39 whereas that of Hercynite is 4.39.