Electrum from selected localities.
Poland | |
| Jadwiga PIECZONKA, Adam PIESTRZYŃSKI, Jacek MUCHA, Adam GŁUSZEK, Maciej KOTARBA, Dariusz WIĘCŁAW (2008): The red-bed-type precious metal deposit in the Sieroszowice-Polkowice copper mining district, SW Poland. Annales Societatis Geologorum Poloniae 78, 151-280. |
| Piestrzynski, A., and Wodzicki, A. (2000): Mineralium Deposita 35, 37-47. |