Omphacite and Hercynite Physical Properties

Omphacite

Hercynite

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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

3.16-3.434.39

1 7.18

1.5 Fracture

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

ConchoidalGemdat.org, Uneven

1.6 Cleavage

{110} Good, {110} Good

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

1.7 Mohs Hardness

5-67.5-8

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)

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

Omphacite and Hercynite Chemical Formula

While comparing Omphacite 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 Omphacite and Hercynite chemical formula.

Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)

Compare Green Gemstones

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Omphacite Vs Powellite

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Omphacite and Hercynite Specific Gravity

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