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Mineralogical Collections
Dr. Susanne Herting-Agthe, Sekr. BH 1, Ernst-Reuter-Platz 1
D-10587 Berlin, tel ++49 (0)30 - 314 22254, fax 314 21124
 

 
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Markasite, twinned on {110}, Misburg, Germany
Photo: Monika Günther
Marcasite 
FeS2    orthorhombic - dipyramidal, mmm
twinned on {110}, on marly limestone
Misburg/Hannover, Germany
height of the twin crystal: 3 cm.  Inv.No. 87/1366.

 

crystal drawings Marcasite

crystal drawings Marcasite

a. single crystal
b. single crystal, view _I_ (001) plane
c. twin on {110}
d. cyclic fourling on  {110}
e. lamellar repeated twinning on {110}

crystal drawings, Marcasite
 
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last version: 2002-06-20