La diffraction des rayons X durs : un nouvel outil pour les géosciences. Application aux quartz naturels

Abstract
The Institut Laue-Langevin hard X ray diffraction technique has been used to study natural quartz crystals from the Alps and Madagascar. The results are consistent with the known descriptions of these types of crystals. This technique presents the advantage to be directly related to the structural properties of the samples. These measurements show the interest of this non destructive technique, which allows global bulk analysis of centimeter size samples, in the field of mineralogy and geosciences. It completes information given by usual methods.