Franklinite and Iolite Physical Properties

Franklinite

Iolite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

5.05-5.22

Uneven

None

5.5-6

(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

2.6-2.7

3,1

7-7.5

Mg₂Al₄Si₅O₁₈

Franklinite and Iolite Chemical Formula

While comparing Franklinite and Iolite 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 Franklinite and Iolite chemical formula.

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Franklinite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Franklinite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Franklinite Vs Iolite during the identification of gemstone. Specific gravity of Franklinite is whereas that of Iolite is .