|
Germany | |
| [Blass, G., Graf , HW., Neufunde von bekannten Fundorten (XII), MW 5/1994] [Blass, G., Emmerich, F., Graf, HW., Tschörtner, J., Minerale der Eifelvulkane, CD, published by authors, 2006] |
| Hentschel, Gerhard (1983) Die Mineralien der Eifelvulkane (1st ed.) Christian Weise Verlag, Munich. |
| Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors |
| Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors Hentschel, Gerhard (1983) Die Mineralien der Eifelvulkane (1st ed.) Christian Weise Verlag, Munich. |
| Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors |
| Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors |
| Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors |
| in the collection of Christof Schäfer |
Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany