Arthur J. Gude III Richard A. Sheppard 1983 <p>Harmotome, probably the most common of the barium-rich zeolites, has been reported from a variety of metamorphic and igneous rocks throughout the world (Deer et al., 1963). Harmotome, however, seems to be a rare authigenic constituent in sedimentary rocks, and its most common occurrence apparently is in deep-sea sediments where its abundance is minor compared with that of phillipsite and clinoptilolite (Kastner and Stonecipher, 1978). The only previous reports of harmotome from lacustrine rocks are in oil shale of the Eocene Green River Formation in the Piceance Creek basin of Colorado and in silicic tufts of the Pliocene Big Sandy Formation near Wikieup, Arizona (Sheppard and Gude, 1971). </p> application/pdf 10.1346/CCMN.1983.0310109 en The Clay Minerals Society Harmotome in a basaltic, volcaniclastic sandstone from a lacustrine deposit near Kirkland Junction, Yavapai County, Arizona article