Locality Layer
Germany, Rhenish Mountains, Dorsten, Fürst Leopold-Baldur mine Westfal C1
Germany, Rhenish Mountains, Herbede, Zeche Herb. Steinkohlenbergwerk Hauptflöz
Germany, Rhenish Mountains, Unna-Königsborn, mine G1
Germany, Rhenish Mountains, Waltrop, Waltrop mine Westfal A1
Germany, Rhenish Mountains, Waltrop, Waltrop mine Westfal B1