Niger Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Benin was US$11 during 2017, according to the United Nations COMTRADE database on international trade. Niger Exports of clays, andalusite, kyanite, sillimanite, mullite, chamotte, dinas earths to Benin - data, historical chart and statistics - was last updated on May of 2024.