منابع مشابه
Quantitative Thermal Analysis of Clay Minerals
Vold's mathematical analysis of the d.t.a, curve has been applied to Murray's data on the dehydration of clays. Owing to experimental uncertainties, values for the heats of dehydration are lower than those determined by other methods. The first ruder law is obeyed and the activation energies of dehydration are of the same order as those derived from isothermal data; rates of dehydration are, ho...
متن کاملFormation and Transformation of Clay Minerals: the Role of Bacteria
Bacteria are the most abundant forms of life we know on our planet that can be able to survive in a variety of habitats, from hot to cold springs, from soils to deep sedimentary rocks, in radioactive wastes and in living organisms. It has been estimated (Whitman et al., 1998; Lipp et al., 2008) that the prokaryote number is 3.5 5.0·1030 and although global subseafloor sedimentary microbial abun...
متن کاملClay Minerals and Catalysis
More than half a century ago, Irish physicist John Desmond Bernal and Swiss geochemist Victor M. Goldschmidt independently proposed that clay minerals may have played an important role in prebiotic synthesis (Bernal 1949; Goldschmidt 1952). I concur that mineral catalysis must have had a central role in prebiotic synthesis because most uncatalyzed reactions start from simple precursors like hyd...
متن کاملClay Minerals: Adsorbophysical Properties
The structure and features of surfaces of clay minerals (kaolin, montmorillonite, etc) have an important scientific and practical value. On the surface the interrelation of processes at electronic, atomic and molecular levels is realized. Availability of mineral surface to external influences opens wide scientific and technical opportunities of use of the surface phenomena, so the research of c...
متن کاملClay Minerals as Natural Nanosheets
Particles with nanometer dimensions (nanoparticles) are all around us. The finest particles of sand are blown by the wind over thousands of kilometers. The finest particles of soils are either eroded by the wind in extremely dry conditions or by water under wet conditions and deposited hundreds of kilometers or more from the origin. The air contains nanoparticles of carbon, ice, and oxides and ...
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ژورنال
عنوان ژورنال: Journal of the Mineralogical Society of Japan
سال: 1960
ISSN: 1883-7018,0454-1146
DOI: 10.2465/gkk1952.5.25