Anomalous Au silicifications in the upper carboniferous of the French Massif Central: timing and temperature constraints by combined geochemical and organic-matter studies
Laboratoire de Géologie de la Matière Organique, Université d'Orléans, Bat. Géosciences, BP 6759, 45067 Orleans Cedex 2, France, BRGM, REM/MESY, BP 6009-45060-Orléans, France,