Hercynite and Eosphorite Physical Properties

Hercynite

Eosphorite

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

4.393.05-3.08

1 7.18

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Fracture

Uneven

Subconchoidal, Uneven, Conchoidal

Cleavage

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

Poor on {100}

Mohs Hardness

7.5-85

2 10

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Chemical Composition

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

Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

Hercynite and Eosphorite Chemical Formula

While comparing Hercynite and Eosphorite 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 Eosphorite chemical formula.

Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Chemical formula of Eosphorite- Mn2+ Al(PO 4)(OH) 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)

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Hercynite and Eosphorite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Eosphorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Eosphorite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 3.05-3.08 whereas that of Eosphorite is 3.05-3.08.