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Boracite
Boracite

Chromite
Chromite



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Boracite
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Chromite

Boracite and Chromite Physical Properties

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Physical Properties

Tenacity

Brittle
Brittle

Solubility

Soluble
-

Durability

-
-

Specific Gravity

2.95-2.964.5-4.8
1 7.18
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Fracture

Conchoidal
Uneven

Cleavage

None
None, parting may develop along {111}

Mohs Hardness

7-7.55.5
2 10
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Chemical Composition

Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Fe++Cr2O4

Boracite and Chromite Chemical Formula

While comparing Boracite 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 Boracite and Chromite chemical formula.

  • Chemical formula of Boracite- Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Chromite- Fe++Cr2O4

Boracite and Chromite Specific Gravity

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