Orbicular Graphite in <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:place w:st="on"><st1:City w:st="on">Oshirabetsu</st1:City>, <st1:State w:st="on">Hokkaido</st1:State>, <st1:country-region w:st="on">Japan</st1:country-region></st1:place>

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Orbicular Graphite in 1 ns = "urn:schemas-microsoft-com:office:smarttags" />1:place w:st="on">1:City w:st="on">Oshirabetsu1:City>, 1:State w:st="on">Hokkaido1:State>, 1:country-region w:st="on">Japan1:country-region>1:place>

详细信息

责任者：Chuan Xiuyun (School of Earth and Space Science ; Peking University ; Beijing 100871 ; China) ; Nozomi Morihara
刊名：Acta Geologica Sinica
出版年：2012
卷期：86(2)
关键词：石墨 ; graphite ; 日本 ; Japan
页码：p.241-246
图表：3 illus., 16 refs.
分类号：0700
issnNo：ISSN0001-5717
isbnNo：CN11-1951/P

摘要

Genesis and microstructure of orbicular graphite collected from 1 ns = "urn:schemas-microsoft-com:office:smarttags" />1:place w:st="on">1:City w:st="on">Oshirabetsu1:City>, 1:country-region w:st="on">Japan1:country-region>1:place>, was analyzed using optical microscope, X-Ray diffraction, and TEM. It can be concluded that along with graphite, orbicular graphite contains sulfide minerals, such as pentlandite, chalcopyrite, pyrrhotite and etc. SEM results show that most of orbicular carbon particles are elliptical, although some graphites are amorphous by HRTEM. Some graphites with good structures were also discovered. Therefore, existence of highly crystallized graphite (such as flaky and needlelike graphite) may suggest that the graphite formed under the catalysis of Fe-Ni-Cu sulfide.