Chromite and Lazurite Physical Properties

Chromite

Lazurite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.5-4.82.75

1 7.18

1.5 Fracture

Uneven

Uneven, UnevenArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

None, parting may develop along {111}

Imperfect on {110}

1.7 Mohs Hardness

5.55.5

2 10

1.8 Chemical Composition

Fe++Cr2O4

(Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

Chromite and Lazurite Chemical Formula

While comparing Chromite and Lazurite 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 Lazurite chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Lazurite- (Na,Ca) 8Al 6Si 6O 24(SO 4,S,Cl) 2Ulrich Henn and Claudio C.

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Chromite and Lazurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chromite and Lazurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Lazurite Optical Properties during the identification of gemstone. Specific gravity of Chromite is 2.75 whereas that of Lazurite is 2.75.