Iolite and Actinolite Physical Properties

Iolite

Actinolite

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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

2.6-2.73.00

1 7.18

1.5 Fracture

Not Available

Uneven, UnevenArthur Thomas, Gemstones (2009), Splintery

1.6 Cleavage

3,1

perfect along {110}.

1.7 Mohs Hardness

7-7.55-6

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

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

Iolite and Actinolite Chemical Formula

While comparing Iolite and Actinolite 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 Iolite and Actinolite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Actinolite- Ca 2(Mg,Fe) 5Si 8O 22(OH) 2Ulrich Henn and Claudio C.

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Iolite and Actinolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Actinolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Actinolite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 3.00 whereas that of Actinolite is 3.00.