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Unusual carbonaceous matter in the form of mostly centimeter­sized lumps and cobbles has been sampled in the southeast Bavarian Alpine Foreland, in the Czech Republic near Pardubice and in the Saarland region near the French border (Fig. 1). It is a highly porous blackish material with a glassy luster on freshly crushed surfaces (Fig. 2). The material is unknown from any industrial or other anthropogenic processes and thus appears to have a natural origin. Here we report on results of a detailed analysis of this strange matter pointing to a process of formation in proposed meteorite impact events. From its first discovery in the Bavarian Chiemgau impact crater strewn field [1] the name chiemite gained currency, and in particular these finds have already been addressed earlier (references in [1]) before a more general occurrence in impact sites became obvious [2, 3]. Material

Chiemite — a high PT carbon impactite from shock coalification/carbonization of impact target vegetation