Reconstructing historic bog iron ore deposits in the Bourtangermoor, a former raised bog in the Netherlands

Bog iron ores are well-known lumps of Fe-(oxy)hydroxides (goethite, limonite) found along streams and in seasonally flooded, low-lying areas. Historic literature of the Bourtangermoor, a former raised bog in the north of the Netherlands and adjacent Germany, however, revealed a second, rare type of bog iron ores, exclusively composed of siderite (Fe-carbonate) with accessory vivianite (Fe-phosphate), minerals only stable under anaerobic conditions. In this research we compared historic literature and maps mainly from the first half of the 20th century, when parts of the bog were still intact,... Mehr ...