Chromite and Howlite Physical Properties

Chromite

Howlite

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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

4.5-4.82.45-2.58

1 7.18

1.5 Fracture

Uneven

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

1.6 Cleavage

None, parting may develop along {111}

None

1.7 Mohs Hardness

5.53-3.5

2 10

1.8 Chemical Composition

Fe++Cr2O4

Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Chromite and Howlite Chemical Formula

While comparing Chromite and Howlite 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 Howlite chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Howlite- Ca 2B 5SiO 9(OH) 5Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Chromite and Howlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chromite and Howlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Howlite Optical Properties during the identification of gemstone. Specific gravity of Chromite is 2.45-2.58 whereas that of Howlite is 2.45-2.58.