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On the structural formula of smectites: a review and new data . . . Seven smectites of the dioctahedral and trioctahedral types were homoionized with Ca2+, substituting the natural exchangeable cations Several differences were found between the formulae obtained for the natural and Ca2+ homoionic samples
Technical Data Sheet - Smectite Clays for Solid Dosage Forms Smectite is the mineralogical term for a group of trilayer clays which include the commercially significant varieties montmorillonite, hectorite and saponite At one time this group was referred to generically as montmorillonite clay
Microstructure of Smectite Clays and Engineering Performance The growing use of swelling clays, and particularly smectite clays, as integral components in engineered clay barriers for waste isolation, has fuelled the need for a body of literature dealing with the properties of smectites and their performance under waste isolation scenarios
C:\TYPESET\MDPWEB\Vol3proc. DVI Mineral Group: Rutile group Occurrence: A common high-temperature, high-pressure accessory mineral in igneous rocks, anorthosite, and granite pegmatite; in hydrothermally-altered rocks; in gneiss, schist, contact metamorphosed limestone; in clays, shales; a common detrital mineral
Phase relations among smectite, R1 illite-smectite, and illite mpli-cations for smectite-to-illite transformation mechanisms Several models have been proposed,including successive replacement of smectite layers by illite layers (Hower et al 1976) and dissolution of smectite and pre
Microsoft PowerPoint - Kaylene Camuti. pps - SMEDG Using the table to interpret alteration minerals Why identify alteration minerals? The chemistry and structure of alteration minerals are a response to their conditions of formation – so the minerals and mineral assemblages provide information on hydrothermal conditions