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Hercynite
Hercynite
☒

Pearl
Pearl
☒



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Hercynite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
4.39
Uneven
{111} Indistinct, {111} Indistinct, {111} Indistinct
7.5-8
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
 
-
-
-
2.60-2.85
-
none
2.5-4.5
CaCO3

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