Marcasite - Cap Blanc Nez, Pas-de-Calais, France
Marcasite crystals presenting the sperkise twin on chalk...
Marcasite in crystallized nodule presenting numerous spearhead twins (sperkise), from Cap Blanc-Nez in Pas-de-Calais department (France).
5,5 x 4 x 4 cm.
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Marcasite crystals presenting the sperkise twin on chalk...
Natural full nodes. Typical velvet sheen. 10,5 x 8,5 x 6 cm.
Marcasite with numerous well-expressed spearhead twins...
Marcasite in crystallized nodule presenting numerous spearhead...
Crystallized marcasite on limestone matrix, very shiny with...