Hercynite and Sylvite Physical Properties

Hercynite

Sylvite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

4.391.993

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

Uneven, Brittle

1.6 Cleavage

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

Perfect on [100], [010], [001]

1.7 Mohs Hardness

7.5-82.5

2 10

1.8 Chemical Composition

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

Not Available

Hercynite and Sylvite Chemical Formula

While comparing Hercynite and Sylvite 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 Hercynite and Sylvite chemical formula.

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

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Hercynite and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 1.993 whereas that of Sylvite is 1.993.