Hercynite and Hackmanite Physical Properties

Hercynite

Hackmanite

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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

4.392.27-2.33

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

UnevenArthur Thomas, Gemstones (2009), UnevenArthur Thomas, Gemstones (2009)

1.6 Cleavage

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

Not Available

1.7 Mohs Hardness

7.5-85.5-6

2 10

1.8 Chemical Composition

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

Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)

Hercynite and Hackmanite Chemical Formula

While comparing Hercynite and Hackmanite 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 Hercynite and Hackmanite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)

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Hercynite and Hackmanite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Hackmanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Hackmanite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.27-2.33 whereas that of Hackmanite is 2.27-2.33.