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Mineralpedia Details for Aubertite

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Aubertite

Aubertite

Formula
Cu2+Al(SO4)2Cl·14H2
Crystal System
Triclinic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
azure, blue 
Streak
light blue 
Class
Triclinic - Pedial 
Hardness
2-3 
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Aubertite from Chuquicamata mine, El Loa Prov., Antofagasta, Chile

Aubertite
            from Chuquicamata mine, El Loa Prov., Antofagasta, Chile

Light blue earthy Aubertite throughout the mass. The specimen also carries Quartz crystals, which look blue from the adjacent Aubertite. In the photos the crystals that are blue are just Quartz, not Aubertite. For a simple copper-aluminum sulfate it is only found in maybe a few dozen worldwide localities.

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