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Mineralpedia Details for Iowaite

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Iowaite

Iowaite

Formula
Mg6Fe3+2(OH)16Cl2ยท4H2
Crystal System
Trigonal 
Crystal Habit
Platy 
Cleavage
Perfect, None, None 
Luster
Greasy (Oily) 
Color
bluish green, greenish white, honey yellow 
Streak
white 
Class
Trigonal - Hexagonal Scalenohedral 
Hardness
1.5 
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Iowaite from Palabora mine, Phalaborwa, Limpopo, South Africa

Iowaite
            from Palabora mine, Phalaborwa, Limpopo, South Africa

Exceptional green crystals with yellow outlines to 0.75mm scattered on matrix.

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Iowaite from Kaznakhtinskiy ultrabasic massif, Terekta Ridge, Altai Republic, Russia

Iowaite
            from Kaznakhtinskiy ultrabasic massif, Terekta Ridge, Altai Republic, Russia

Deep dark purple foliated mass of this interesting and rare member of the hydrotalcite group. This is I belief the only purple occurence of Iowaite, colored purple by chromium.

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