Hercynite and Andesine Physical Properties

Hercynite

Andesine

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

4.392.65-2.69

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

Uneven, Uneven, Conchoidal, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

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

Perfect on {001}, good on {010}

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)Al_1-2Si_3-2O₈

Hercynite and Andesine Chemical Formula

While comparing Hercynite and Andesine 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 Andesine chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Andesine- (Na,Ca)Al_1-2Si_3-2O₈

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Hercynite and Andesine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Andesine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Andesine Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 2.65-2.69 whereas that of Andesine is 2.65-2.69.