TU-Emblem Technische Universität Berlin
Mineralogische Sammlungen
Dr. Susanne Herting-Agthe, Sekr. BH 1, Ernst-Reuter-Platz 1, D-10587 Berlin, Germany
tel ++49 (0)30 - 314 22254, fax 314 72218
 

 
                           Malachite, pseudomorph after Azurite
 
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Malachit, pseudomorph nach Azurit, Tsumeb
  Photo: Monika Günther
Malachite
Cu2 [(OH)2 I CO3]         monoklinic  prismatic, 2/m
pseudomorph after tabular Azurite crystals, Cu3 [OH I CO3]2, forming rosette-like aggregates.
Tsumeb, Otavi mountains, Namibia.
rosettes up to 4cm. 

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Kristallzeichnung tafliger AzuritKristallzeichnung Azurit-Rosette

Azurite (on the foto above altered into Malachite)
crystal drawings:
left: tabular single crystal with basis {001}, vertical prism {110} and prism {10-4}
right: rosette formed aggregate

last version: oct 2009