Hackmanite and Chromite Physical Properties

Hackmanite

Chromite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.27-2.334.5-4.8

1 7.18

1.5 Fracture

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

Uneven

1.6 Cleavage

Not Available

None, parting may develop along {111}

1.7 Mohs Hardness

5.5-65.5

2 10

1.8 Chemical Composition

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

Fe++Cr2O4

Hackmanite and Chromite Chemical Formula

While comparing Hackmanite and Chromite 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 Hackmanite and Chromite chemical formula.

Chemical formula of Hackmanite- Na 8Al 6Si 6O 24Cl 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Chemical formula of Chromite- Fe++Cr2O4

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Hackmanite and Chromite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hackmanite and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hackmanite and Chromite Optical Properties during the identification of gemstone. Specific gravity of Hackmanite is 4.5-4.8 whereas that of Chromite is 4.5-4.8.