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Contribution of Eocene sharks and rays from southern France to the history of deep-sea selachians
SW France Eocene Deep-sea selachians Fossil record
2009/10/20
Fossil deep-sea selachians are rare and their diversity underestimated as a consequence of the scarcity of available outcrops of sediments containing them. Here we report a new fossil locality from th...
Mineralogy of the Louvres Merovingian garnet cloisonn?jewelry: Origins of the gems of the first kings of France
Mineralogy Louvres Merovingian garnet cloisonn Origins
2012/3/31
Proton-particle induced X-ray emission (p-PIXE) analyses have been performed on cloisonne ?jewelry from a necropolis excavated in 1987 at Louvres (North Paris) that dates from the Early Middle Ages (f...
Hydrothermal and Supergene Alterations in the Granitic Cupola of Montebras, Creuse, France
Biotite Chlorite Corrensite Granite Greisen Hydrothermal Kaolin Petrography Weathering
2012/1/10
A mineralogical investigation of the highly kaolinized Chanon granite and albite-muscovite granite of the Montebras cupola, Creuse, France, indicates that the magmatic stage was followed by two hydrot...
Lithium-Bearing Donbassite and Tosudite from Echassieres, Massif Central, France
Donbassite Granite Hydrothermal alteration Infrared spectroscopy Lithium Petrography Tosudite X-ray powder diffraction
2011/11/28
Abstract: Lithium-bearing don bassite and tosudite were found in veins in hydrothermally altered granite (Beauvoir granite) in the northern part of the Massif Central, France. The two minerals are cha...
Mineralogical and Geochemical Study of Clay Mineral Transformations in the Sedimentary Triassic Jura Basin (France)
Mineralogical Geochemical Study Clay Mineral Transformations Sedimentary Triassic Jura Basin
2012/2/21
A detailed study of sediments from the Triassic of the French Jura shows that clay minerals vary continuously with the facies. Near the coasts of the Jura Sea, sediments consisted of sandy, continenta...
SUR LES CONSTITUANTS PHOSPHATES DES MINERAlS DE FER OOLITHIQUES DE FRANCE
SUR LES CONSTITUANTS PHOSPHATES DES MINERAlS DE FER OOLITHIQUES DE FRANCE
2014/4/8
Les minerais de fer oolithiques sont constitues en grande partie par des mineraux cristallises, reconnaissables au microscope en lumiere trans mise ou en lumiere rcfiechie. Leur identification est ais...