Hercynite and Labradorite Physical Properties

Hercynite

Labradorite

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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

4.392.69-2.72

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

Uneven, Conchoidal, Gems, Sixth Edition (2006)

1.6 Cleavage

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

Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}

1.7 Mohs Hardness

7.5-86-6.5

2 10

1.8 Chemical Composition

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

(Na,Ca)_1-2Si_3-2O₈

Hercynite and Labradorite Chemical Formula

While comparing Hercynite and Labradorite 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 Labradorite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Labradorite- (Na,Ca)_1-2Si_3-2O₈

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Hercynite and Labradorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.