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Iddingsite
Iddingsite
☒

Ettringite
Ettringite
☒



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Iddingsite
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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
2.5-2.8
-
{???} Perfect
3
MgO.Fe2O3.3SiO2•4(H2O)
 
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Partially soluble in water
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1.77
-
Perfect on {10 1 0}
2-2.5
Ca 6Al 2(SO 4) 3(OH) 12 26H 2OMichael O’Donoghue , Gems, Sixth Edition (2006)

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Brown Gemstones

Radiolarite
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Ettringite
Vlasovite
Ettringite Vs Vlasovite
Ettringite
Vesuvianite
Ettringite Vs Vesuvianite
Ettringite
Pyrrhotite
Ettringite Vs Pyrrhotite

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