巻号一覧
14 巻 (1974 - 1975)
- 4 号 p. 99-
- 3 号 p. 71-
- 2 号 p. 35-
- 1 号 p. 1-
14 巻, 3 号
選択された号の論文の3件中1～3を表示しています
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石川 幸洋, 下田 右1974 年 14 巻 3 号 p. 71-78
発行日: 1974/10/25
公開日: 2011/09/20
ジャーナル フリーAn artificial alteration of both Sericite and its dehydroxylate was tried in NaTPB solution.
Murakami sericite was altered to irregularly interstratified mineral and gradually it seems to become to a 14 Åexpandable mineral. Its dehydroxylate was altered directly to 14Åexpandable mineral but yielded no interstratified mineral. The other hand, Furikusa sericite was altered to regularly interstratified mineral and in the fi nal alteration stage a 14Ånon-expandable mineral was formed. Its dehydroxylate was altered to regularly interstratified mineral.
Above differences between Murakami and Furikusa sericites in the altered products seem to be due to the difference on the distribution of cations such as Si and Al in their tetrahedral sites.抄録全体を表示PDF形式でダウンロード (904K) -
下田 右1974 年 14 巻 3 号 p. 79-89
発行日: 1974/10/25
公開日: 2011/09/20
ジャーナル フリーMineralogical properties of two specimens called swelling chlorite were examined by means of X-ray, thermal, infrared abscrption and chemical analysis. They give a 14.8 Åreflection and higher orders. Although their diffraction patterns are close to those of chlorite, the 14.8 Åreflection moves to 15.5 Åupon glycolation. They are interstratified minerals of chlorite with expandable layers. One specimen seems to be an interstratified mineral of chlorite and montmorillonite but the expandable layer of the other specimen is undoubtedly different from montmorillonite. The data obtained are discussed in comparison with earier data of the so-called swelling chlorites.抄録全体を表示PDF形式でダウンロード (1374K) -
北川 靖夫1974 年 14 巻 3 号 p. 90-97
発行日: 1974/10/25
公開日: 2011/09/20
ジャーナル フリーThe distinction between kaolinite and metahalloysite occurring in some lateritic soils was examined by electron microscopy, X-ray diffraction method, infrared absorption spectroscopy and thermal analyses. The results are summarized as follows:
(1) In electron micrograph, kaolinite and metahalloysite show the shape of hexagonal plate and tube, respectively. The particle size of soil minerals is smaller than that of geological origins.
(2) The basal spacings of kaolinite are 7.2 and 3.59 Åfor primary and secondary reflection, respectively, while, they are 7.4 and 3.62Åin metahalloysite. The intensity ratios of secondary versus primary reflections are 0.8 for kaolinite and 0.5 for metahalloysite.
(3) The infrared absorption band associated with 0-H stretching vibration of structural hydroxyl groups in kaolinite at the range from 3700 to 3600 cm-1 is split to three or four lines, but that in metahalloysite is split to only two lines. The absorption band associated with Si-0 stretching vibration at the range about 1100 to 1000 cm-1 is also split to three lines in kaolinite and two lines in metahalloysite.
(4) By thermogravimetry and differential thermal analysis, it is difficult to distinguish between kaolinite and metahalloysite.
(5) X-ray diffraction method is most effective to distinguish metahalloysite from halloysite. Therefore, a method of electron microscopy and infrared absorption spectroscopy is appropriate besides X-ray diffraction method for the identification of kaolinite and metahalloysite.抄録全体を表示PDF形式でダウンロード (6166K)
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