IPGP's Marine Rock Repository archives all the samples that have been collected by IPGP teams during oceanographic cruises. All the samples in this rock repository have been registered with an International Geo Sample Number (IGSN). They are thus visible in the SESAR database.
This repository is located in Chambon La Forêt (France), at the site of the National Magnetic Observatory and located ~100 km South of Paris.
More information at the webpage: lithotheque.ipgp.fr