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RM515   Marcasite with galena and Sphalerite on schalenblende

Carrière du Cimetière, Seilles, Andenne, Namur, Belgium

Groups of sharp marcasite crystals, very brilliant, showing the classic forms of "cockscomb". Very stable, defined and partially covering a matrix of small crystals of sphalerite. This matrix presents the known "schalenblende". It is formed by compact sphalerite and wurtzite masses of a pale brown colour, occurring in concentric layers with reniform surfaces which also may contain pyrite and galena. It is believed to have formed by crystallization of a rich-sulfide colloidal dispersion. Good size and aesthetic specimen.

Size: 10,0 x 6,4 x 4,0 cm.
Main crystal: 3 x 3 mm.
Found in 2010.

Precio reducido-Reduced price 65€