Kornerupine and Hercynite Physical Properties

Kornerupine

Hercynite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.454.39

1 7.18

1.5 Fracture

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

ConchoidalGemdat.org, Uneven

1.6 Cleavage

Good on {110}

{111} Indistinct, {111} Indistinct, {111} Indistinct

1.7 Mohs Hardness

6.57.5-8

2 10

1.8 Chemical Composition

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Kornerupine and Hercynite Chemical Formula

While comparing Kornerupine 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 Kornerupine and Hercynite chemical formula.

Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

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Kornerupine and Hercynite Specific Gravity

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