Norbergite and Iolite Physical Properties

Norbergite

Iolite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.1772.6-2.7

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle

Not Available

1.6 Cleavage

{???} Distinct

3,1

1.7 Mohs Hardness

6-6.57-7.5

2 10

1.8 Chemical Composition

Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)

Mg₂Al₄Si₅O₁₈

Norbergite and Iolite Chemical Formula

While comparing Norbergite 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 Norbergite and Iolite chemical formula.

Chemical formula of Norbergite- Mg 3(SiO 4)(F,OH) 2Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈

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Norbergite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Norbergite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Norbergite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Norbergite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.