著者

中山 健 八田 万有美 西尾 憲二 中川 昌治

出版者

資源地質学会

雑誌

資源地質 (ISSN:09182454)

巻号頁・発行日

vol.72, no.2, pp.95-114, 2022-12-22 (Released:2023-11-16)

参考文献数

95

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The recent remarkable development of the information society has brought about a great change in theliterate society. Writing by Chinese ink with an inkstone has become almost obsoleted. However, inkstones are stillone of the Japanese traditional handicrafts that are loved and treasured by calligraphers, painters, citizens who enjoycalligraphy, and arts and crafts enthusiasts. Until now, there has been limited about scientific research on traditionalChinese terms and notations related to inkstones, the functions of inkstones, natural figures on the inkstones, etc.We carried out preliminary petrological and mineralogical experiments of ink stones and reported its functional properties.In addition, domestic ink stone was also reviewed and the production environment was examined. In order to inheritthe unique Japanese traditional craft techniques, further contributions from geology, petrology, and mineralogy areexpected, such as elucidation of precise texture of inkstone and identifying high quality inkstone stone resources.

著者

中川 昌治 中本 順子 吉原 俊昭

出版者

The Clay Science Society of Japan

雑誌

粘土科学 (ISSN:04706455)

巻号頁・発行日

vol.35, no.1, pp.1-14, 1995-07-28 (Released:2011-09-20)

参考文献数

31

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Mineral parageneses and mineralogical properties of quartz and NH4-bearing sericite at the Izumiyama pottery stone deposit, Saga Prefecture, have been examined. The deposit was formed by hydrothermal alteration of a rhyolite intrusion. The deposit can be divided into four zones: 1) the sericite zone with sericite vein, 2) the sericite-kaolinite zone, 3) the weakly altered zone (I) and 4) the weakly altered zone (II), from the center to the outer of the alteration area. The typical Izumiyama ore of the sericite zone is composed mainly of quartz and sericite. The sericite-kaolinite zone consists of quartz, sericite and kaolinite. The weakly alterd zone (I) contains residual orthoclase. The weakly altered zone (II) contains residual sanidine and small amounts of mica/smectite with 20-50% smectite layers. Buddingtonite is also contained in some ores of the weakly altered zones.X-ray diffraction peaks of the quartz are broad. The cell dimensions are considerably large with a=4.9147-4.9153Å and c=5.4054-5.4058Å at 18°C. The high-low inversion peak in the DTA curve is broad and the peak temperature is 10-14°C lower than that of standard quartz. The quartz sample in the center of the hydrothermal alteration has smaller cell dimensions and higher inversion temperature than the sample in the outer alteration zone.Sericite in the inner two zones is mica with a little amount of smectite layer (0-5%). On the other hand, sericite in the weakly altered zone (I) is irregularly interstratified mica/smectite with 5-15% smectite layers, and the crystallite size is thinner than that in the inner zones. Basal spacing of sericite ranges from 10.063 to 10.174Å due to the extent of NH4 incorporation in the interlayer site. Sericites having high content of interlayer NH4 occur in the weakly altered zone (I), where buddingtonite is the main coexisting mineral. The distribution patterns of these NH4-bearing minerals suggest that the enrichment of NH4 in the Izumiyama pottery stone is a result of the interaction between the hydrothermal solution and sedimentary xenoliths in original rhyolite.

著者

中川 昌治 M. Santosh 吉倉 紳一 原田 亜実 三浦 正裕 福田 照久 松田 靖正 桑田 泰宏 K. J. Mathew P. T. Ambujakshan H. Thampy

出版者

一般社団法人日本粘土学会

雑誌

粘土科学討論会講演要旨集 第48回 粘土科学討論会 (ISSN:24330566)

巻号頁・発行日

pp.23, 2004 (Released:2006-05-13)

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南インドKerala州のTrivandrum近郊では,良質のカオリン粘土の鉱床が多く存在し,紙や衛生陶器用に採掘されている.カオリナイトと少量の石英からなる白色塊状粘土の層が第三紀層中に胚胎し,鉱床上部にはラテライト化した砂質カオリンが分布する.これらの粘土中のカオリナイトはXRDとSEMから結晶性が非常に高い.基盤岩(先カンブリア時代のアルミナ質グラニュライト)が強烈な風化変質作用を受けカオリン化し,近くの湖に堆積してできたと考えられる.

著者

中川 昌治

出版者

日本粘土学会

雑誌

粘土科学 (ISSN:04706455)

巻号頁・発行日

vol.42, no.3, 2003-03-28

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対州陶石は中新世の石英斑岩が熱水変質作用を受けて生成した.石英斑岩の固結に引き続く高温の熱水作用により,曹長石,2M_1,セリサイト,Caバイデライトが順に石英と共に生成し,特にセリサイト化が激しく進んで,石英斑岩が陶石化した.更に,付近の花崗岩プルトンに関係した熱水により,FeMg緑泥石,緑泥石/バーミキュライト混合層鉱物,2M_1セリサイトなどが鉱染状に生成した.最後に激しいハロイサイト化変質作用があり,陶石の一部が対州白土になった.