Browsing by Author "Kogure, Toshihiro"

Browsing by Author "Kogure, Toshihiro"

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  • Clays and Clay Minerals, Vol. 54, No. 5, 598-604, 2006. 
    Kudoh, Yuriko; Kameda, Jun; Kogure, Toshihiro (The Clay Minerals SocietyThe Clay Minerals Society, 2006-09)
    The dissolution of brucite, Mg(OH)2, on the (001) surface was investigated using in situ atomic force microscopy in solutions at near-neutral pH. Dissolution proceeded by the formation of crystallographically oriented ...
  • Clays and Clay Minerals, Vol. 55, No. 5, 453–466, 2007. 
    Kameda, Jun; Miyawaki, Ritsuro; Drits, Victor A.; Kogure, Toshihiro (The Clay Minerals SocietyThe Clay Minerals Society, 2007)
    Polytypism in gu¨mbelite and its relationship to the fibrous or ribbon-like morphology exhibited by this Mg-rich illite were investigated by powder X-ray diffraction (XRD), electron back-scattered diffraction (EBSD) and ...
  • Clays and Clay Minerals, Vol. 56, No. 4, 470–485, 2008. 
    Johnston, Cliff T.; Kogel, Jessica Elzea; Bish, David L.; Kogure, Toshihiro; Murray, Haydn H. (The Clay Minerals SocietyThe Clay Minerals Society, 2008)
    Low-temperature FTIR spectroscopy was used to characterize the n(OH) region of kaolingroup minerals including well ordered to poorly ordered kaolins from Georgia, Brazil, and England, along with samples of discrete dickite ...
  • Clays and Clay Minerals, Vol. 56, No. 6, 612–621, 2008. 
    Kogure, Toshihiro; Kameda, Jun; Drits, Victor A. (The Clay Mineral SocietyThe Clay Minerals Society, 2008)
    Stacking disorder in celadonite, a dioctahedral mica with Fe and Mg as major octahedral cations and which generally adopts the 1M stacking sequence, was investigated mainly by using transmission electron microscopy (TEM). ...
  • Clays and Clay Minerals, Vol. 57, No. 1, 134–135, 2009. 
    Guggenheim, Stephen; Adams, John M.; Bergaya, Faiza; Brigatti, Maria F.; Drits, Victor A.; Formoso, Milton L. L.; Galan, Emilio; Kogure, Toshihiro; Stanjek, Helge; Stucki, Joseph W. (The Clay Minerals Society, 2009)
    Kogure and co-workers have published several papers reporting the stacking structures of various 2:1 layer phyllosilicates (e.g. aspidolite, Kogure et al. (2004); wonesite, Kogure et al. (2005); pyrophyllite, Kogure et al. ...
  • Clays and Clay Minerals, Vol. 58, No. 1, 62–71, 2010. 
    Kogure, Toshihiro; Elzea-kogel, Jessica; Johnston, Cliff T.; Bish, David L. (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    Although structural disorder in kaolinite has been investigated extensively, it is still not understood properly. To investigate the problem, a kaolinite specimen of sedimentary origin from Capim, Brazil, was examined, ...
  • Clays and Clay Minerals, Vol. 58, No. 3, 364–376, 2010. 
    Wahle, Michael W.; Bujnowski, Thomas J.; Guggenheim, Stephen; Kogure, Toshihiro (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    The objective of this paper is to describe the new serpentine group mineral, guidottiite, which is analogous to cronstedtite. Guidottiite has an ideal chemical composition of (Mn2Fe3+)(SiFe3+)O5(OH)4. The sample is from ...
  • Clays and Clay Minerals, Vol. 58, No. 4, 522–531, 2010. 
    Kogure, Toshihiro; Drits, Victor A. (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    High-resolution transmission electron microscopy (HRTEM) images oftwo dioctahedral micas, celadonite and cis-vacant (cv) illite, were examined in detail to understand the effects of electron radiation on their structures ...
  • Clays and Clay Minerals, Vol. 60, No. 5, 484–495, 2012. 
    Kim, Jin-wook; Kogure, Toshihiro; Yang, Kiho; Kim, Sang-tae; Jang, Young-nam; Baik, Hion-suck; Geesey, Gill (The Clay Minerals SocietyThe Clay Minerals Society, 2012)
    Mineralization of microbial biomass is a common phenomenon in geothermal habitats, but knowledge of the structure of the minerals formed in these environments is limited. A combination of spectroscopic, microscopic, and ...
  • Clays and Clay Minerals, Vol. 60, No. 6, 574–587, 2012. 
    Drits, Victor A.; Guggenheim, Stephen; Zviagina, Bella B.; Kogure, Toshihiro (The Clay Minerals SocietyThe Clay Minerals Society, 2012)
    To determine the relationships between the symmetry of the overall pyrophyllite and talc structure and the symmetry of individual layers, the geometry and symmetry of each 2:1 layer of pyrophyllite and talc were analyzed. ...