Actinolite and Chromite Physical Properties

Actinolite

Chromite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.004.5-4.8

1 7.18

1.5 Fracture

Uneven, UnevenArthur Thomas, Gemstones (2009), Splintery

Uneven

1.6 Cleavage

perfect along {110}.

None, parting may develop along {111}

1.7 Mohs Hardness

5-65.5

2 10

1.8 Chemical Composition

Ca 2(Mg,Fe) 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.

Fe++Cr2O4

Actinolite and Chromite Chemical Formula

While comparing Actinolite 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 Actinolite and Chromite chemical formula.

Chemical formula of Actinolite- Ca 2(Mg,Fe) 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.
Chemical formula of Chromite- Fe++Cr2O4

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Actinolite and Chromite Specific Gravity

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