Chromite and Rock Crystal Physical Properties

Chromite

Rock Crystal

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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

4.5-4.82.65

1 7.18

1.5 Fracture

Uneven

ConchoidalWalter Schumann, Gemstones of the world (2001), ConchoidalWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

None, parting may develop along {111}

Not Available

1.7 Mohs Hardness

5.57

2 10

1.8 Chemical Composition

Fe++Cr2O4

SiO 2Walter Schumann , Gemstones of the world (2001)

Chromite and Rock Crystal Chemical Formula

While comparing Chromite and Rock Crystal 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 Rock Crystal chemical formula.

Chemical formula of Chromite- Fe++Cr2O4
Chemical formula of Rock Crystal- SiO 2Walter Schumann , Gemstones of the world (2001)

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Chromite and Rock Crystal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Chromite and Rock Crystal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Chromite and Rock Crystal Optical Properties during the identification of gemstone. Specific gravity of Chromite is 2.65 whereas that of Rock Crystal is 2.65.