Riebeckite and Hercynite Physical Properties

Riebeckite

Hercynite

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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

3.28-3.444.39

1 7.18

1.5 Fracture

Uneven, Splintery, Brittle

ConchoidalGemdat.org, Uneven

1.6 Cleavage

Perfect on {110}, intersecting at 56° and 124°; partings on {100} and {010}

{111} Indistinct, {111} Indistinct, {111} Indistinct

1.7 Mohs Hardness

5.0-6.07.5-8

2 10

1.8 Chemical Composition

Not Available

Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Riebeckite and Hercynite Chemical Formula

While comparing Riebeckite and Hercynite 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 Riebeckite and Hercynite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

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Riebeckite and Hercynite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Riebeckite and Hercynite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Riebeckite and Hercynite Optical Properties during the identification of gemstone. Specific gravity of Riebeckite is 4.39 whereas that of Hercynite is 4.39.