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Hercynite and Crocoite Physical Properties


Crocoite and Hercynite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
4.39   
5.90-6.10   

Fracture
ConchoidalGemdat.org, Uneven   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), (e.g. graphite).   

Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct   
{110} Distinct, {001} Indistinct, {100} Indistinct   

Mohs Hardness
7.5-8   
2.5-3   

Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)   
PbCrO 4Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Hercynite and Crocoite Chemical Formula

While comparing Hercynite and Crocoite 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 Crocoite chemical formula.

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Hercynite and Crocoite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hercynite and Crocoite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Crocoite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 5.90-6.10 whereas that of Crocoite is 5.90-6.10.

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