Chromite and Pleonaste Physical Properties

Chromite

Pleonaste

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.5-4.83.80

1 7.18

1.5 Fracture

Uneven

Not Available

1.6 Cleavage

None, parting may develop along {111}

Not Available

1.7 Mohs Hardness

5.58

2 10

1.8 Chemical Composition

Fe++Cr2O4

(Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

Chromite and Pleonaste Chemical Formula

While comparing Chromite and Pleonaste 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 Chromite and Pleonaste chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Pleonaste- (Mg,Fe)Al 2O 4Gemdat.org , Management Team (2012)

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Chromite and Pleonaste Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chromite and Pleonaste Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Pleonaste Optical Properties during the identification of gemstone. Specific gravity of Chromite is 3.80 whereas that of Pleonaste is 3.80.