Adamite and Chromite Physical Properties

Adamite

Chromite

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1 Physical Properties

1.1 Tenacity

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.32-4.48

4.5-4.8

1.5 Fracture

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

Uneven

1.6 Cleavage

{101}, good; {010}, poor

None, parting may develop along {111}

1.7 Mohs Hardness

3.5

5.5

1.8 Chemical Composition

Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)

Fe++Cr2O4

Adamite and Chromite Chemical Formula

While comparing Adamite 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 Adamite and Chromite chemical formula.

Chemical formula of Adamite- Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
Chemical formula of Chromite- Fe++Cr2O4

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Adamite and Chromite Specific Gravity

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