Journal Article Research Support, Non-U.S. Gov't scanning hard X-ray nanoprobe Apatites Fresnel zone plates J41CSQ7QDS Minerals Trace Elements X-ray multi-technique imaging X-ray nanofocusing Zinc continuous scan dark field differential phase contrast fluorescence microprobe hierarchical length-scale imaging morphology multimodal techniques phase contrast phase retrieval scanning X-ray tomography scanning multimodal X-ray imaging spectro-microscopy tomographic reconstruction zone-plate stacking