Clay mineralogy, chemical and geotechnical characterization of bentonite from beni bou ifrour massif (The eastern rif, Morocco) - Ait Hmeid H.; Akodad M.; Aalaoul M.; Baghour M.; Moumen A.; Skalli A.; Anjjar A.; Conti P.; Sfalanga A.; Ryazi Khyabani F.; Minucci S.; Daoudi L. (Geological Society Special Publication, 2021)