Sheppard, Richard A; Fitzpatrick, Joan J (1989), "Phillipsite from silicic tuffs in saline, alkaline-lake deposits", Clays and Clay Minerals, 37 (3): 243–247, Bibcode:1989CCM....37..243S, doi:10.1346/CCMN.1989.0370307
Sheppard, Richard A; Fitzpatrick, Joan J (1989), "Phillipsite from silicic tuffs in saline, alkaline-lake deposits", Clays and Clay Minerals, 37 (3): 243–247, Bibcode:1989CCM....37..243S, doi:10.1346/CCMN.1989.0370307