emblem of the Technische Universität Berlin Technische Universität Berlin
Mineralogical Collections
Dr.Susanne Herting-Agthe, Sekr. BH 1, Ernst-Reuter-Platz 1, D-10587 Berlin, Germany
tel ++49 (0)30 - 314 22254, fax 314 72218
 

 
    Pyrite
 
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Pyrite twin, Elba island, Italy
  Photo:Monika Günther
Pyrite 
FeS2   cubic - disdodecahedral (isometric - diploidal), m-3 (2/m  -3)
Pentagondodecahedron {210}, penetration twin on {110}.
Cantiere Bacino, Rio Marina,Elba island, Italy.
Original size!.Inv.No. 94/41.

 
crystal drawings pyrite

Crystal drawings Pyrite
a. single crystal, positive pentagondodecahedron {210}
c. single crystal, negative pentagondodecahedron{120}
b. penetration twin on  {110}  of  a. and b.

last version: oct 2009