Strickblende from selected localities.
Belgium | |
| C.H.M.-Schäfer, Paul de Bondt and other collections |
| Paul De Bondt collection |
Paul De Bondt collection | |
| Paul De Bondt collection |
L. Dejonghe, F. Ladeuze, D.Jans - Atlas des gisements plombo-zinciferes du synclinorium de Verviers - 1993, 483pp |
Schmalgraf mine, Kelmis, Liège, Wallonia, Belgium