Hercynite and Grossular Physical Properties

Hercynite

Grossular

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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

4.393.55-3.73

1 7.18

1.5 Fracture

ConchoidalGemdat.org, Uneven

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

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

none

1.7 Mohs Hardness

7.5-87-7.5

2 10

1.8 Chemical Composition

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

Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Hercynite and Grossular Chemical Formula

While comparing Hercynite and Grossular 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 Grossular chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Grossular- Ca 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

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Hercynite and Grossular Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Grossular Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Grossular Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 3.55-3.73 whereas that of Grossular is 3.55-3.73.