Andesine and Hercynite Physical Properties

Andesine

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

2.65-2.694.39

1 7.18

1.5 Fracture

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

ConchoidalGemdat.org, Uneven

1.6 Cleavage

Perfect on {001}, good on {010}

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

1.7 Mohs Hardness

6-6.57.5-8

2 10

1.8 Chemical Composition

(Na,Ca)Al_1-2Si_3-2O₈

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

Andesine and Hercynite Chemical Formula

While comparing Andesine 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 Andesine and Hercynite chemical formula.

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

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Andesine and Hercynite Specific Gravity

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