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Journal of the Mineralogical Society of Japan最新文献

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Transition Between Periodic Precipitation and Tree-like Crystal Aggregates 周期性沉淀与树状晶体聚集之间的转变
Journal of the Mineralogical Society of Japan Pub Date : 2001-03-01 DOI: 10.2465/GKK1952.26.103
A. Toramaru, Akira Iochi
{"title":"Transition Between Periodic Precipitation and Tree-like Crystal Aggregates","authors":"A. Toramaru, Akira Iochi","doi":"10.2465/GKK1952.26.103","DOIUrl":"https://doi.org/10.2465/GKK1952.26.103","url":null,"abstract":"Transitions between periodic patterns and tree-like patterns in lead iodide precipitation systems were found with varying agar concentration in diffusion media. At high agar concentrations, periodic patterns (Liesegang band) of lead iodide precipitates form whereas at low agar concentrations, tree-like crystal aggregates similar to diffusionlimited aggregation (DLA) develop in the entire system. At an intermediate agar concentration, Liesegang band forms near the contact surface, while tree-like aggregates appear suddenly at some distance from the contact. The influence of agar concentration and lead-iodide concentration ratio was represented as the morphological phase diagram. Together with examinations of diffusion coefficient, nucleation threshold, internal structure of agar media and crystal number densities with varying agar concentration, it is concluded that the effect of agar concentration on nucleation kinetics, rather than on diffusion coefficient, controls the morphological transition.","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123973927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
EPMAによるFe2+/Fe3+およびMn2+/Mn3+比の見積もり EPMA对Fe2+/Fe3+和Mn2+/Mn3+比的估计
Journal of the Mineralogical Society of Japan Pub Date : 1999-11-30 DOI: 10.2465/GKK1952.28.159
佳央 木村, 正秀 赤坂
{"title":"EPMAによるFe2+/Fe3+およびMn2+/Mn3+比の見積もり","authors":"佳央 木村, 正秀 赤坂","doi":"10.2465/GKK1952.28.159","DOIUrl":"https://doi.org/10.2465/GKK1952.28.159","url":null,"abstract":"We have reinvestigated the relationship between the relative intensities of Lα and Lβ X-ray emission peaks, [Lβ/Lα], and Fe2+/Fe3+ or Mn2+/Mn3+-ratios in silicate minerals. For Fe-bearing silicates, two kinds of regression lines were obtained; (1) 0≤[Fe2++/(Fe2++Fe3+)]≤0.74: [Lβ/Lα]Fe=0.1414×[Fe2+/(Fe2++Fe3+)]+0.4121 (R2=0.986), (2) 0.74≤[Fe2+/(Fe2++Fe3+)]≤1.00: [Lβ/Lα]Fe=0.8024×[Fe2+/(Fe2++Fe3+)]-0.0798 (R2=0.973). By using these regression lines, it is possible to estimate semiquantitative Fe2+/(Fe2++Fe3+)-ratio of Fe-silicates containing total FeO more than 5 wt.%. For Mn-bearing silicates, a regression line of [Lβ/Lα]Mn=0.46×[Mn2+/(Mn2++Mn3+)]+0.554 (R2=0.968) was obtained. However, even if samples contain total MnO more than 10 wt.%, standard deviation of [Lβ/Lα]Mn-ratio for each sample is large. Thus, [Lβ/Lα]Mn-ratio can not be used for semiquantitative determination of Mn2+/(Mn2++Mn3+)-ratio but gives us qualitative information.","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"81 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130850914","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 12
可視・近赤外リモートセンシングによる造岩鉱物の定量的分析 珪酸塩鉱物を例として;可視・近赤外リモートセンシングによる造岩鉱物の定量的分析 珪酸塩鉱物を例として;Quantitative Analysis of Rock-Forming Minerals by Visible and Near-Infrared Remote Sensing. Silicate Minerals as Examples. 以硅酸盐矿物为例，通过可视、近红外遥感对造岩矿物进行定量分析;以硅酸盐矿物为例，通过可视、近红外遥感对造岩矿物进行定量分析;Quantitative Analysis of Rock-Forming Minerals by Visible and Near-Infrared Remote Sensing. SilicateMinerals as Examples。
Journal of the Mineralogical Society of Japan Pub Date : 1999-08-01 DOI: 10.2465/GKK1952.28.109
Takahiro Hiroi
{"title":"可視・近赤外リモートセンシングによる造岩鉱物の定量的分析 珪酸塩鉱物を例として;可視・近赤外リモートセンシングによる造岩鉱物の定量的分析 珪酸塩鉱物を例として;Quantitative Analysis of Rock-Forming Minerals by Visible and Near-Infrared Remote Sensing. Silicate Minerals as Examples.","authors":"Takahiro Hiroi","doi":"10.2465/GKK1952.28.109","DOIUrl":"https://doi.org/10.2465/GKK1952.28.109","url":null,"abstract":"Most of rock-forming minerals show characteristic absorption features in the visible and near-infrared wavelength regions. Especially, silicates such as olivine and pyroxene show clear absorption bands due to Fe2+, which change in wavelength position and strength as their Fe/Mg ratios change. Also, structural change by shock can alter absorption band shapes as seen in plagioclase-muskelynite series. Such changes can be readily quantified using the Modified Gaussian Model. Also, mineral mixing ratios and grain size and shape of each mineral cause specific changes in reflectance spectra, which can be simulated by photometric models. As a special complication of planetary surface regoliths, spaceweathering effects have to be removed from the reflectance spectra.","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"98 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120900309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Handling and Analyses of Trace Amounts of Extraterrestrial Organic Matter. 微量地外有机物的处理和分析。
Journal of the Mineralogical Society of Japan Pub Date : 1999-08-01 DOI: 10.2465/GKK1952.28.139
M. Komiya
{"title":"Handling and Analyses of Trace Amounts of Extraterrestrial Organic Matter.","authors":"M. Komiya","doi":"10.2465/GKK1952.28.139","DOIUrl":"https://doi.org/10.2465/GKK1952.28.139","url":null,"abstract":"Extraterrestrial organic matter has been greatly interested in with relevance to prebiotic evolution of organic matter and origins of life. Since the organic matter in extraterrestrial material is a mixture of many kinds of organic compounds, wet analytical methods are most suitable for the analyses of these compounds. The methods include extraction of soluble organic matter, chromatographic separations into fractions, and molecular identification by analytical instruments. They also allow to separate enantiomers of amino acids, and to determine isotopic compositions of specific compounds. The experimental details should be optimized for detection of compounds as many as possible. They should be carried out very carefully in order to minimize possible terrestrial contamination.","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127737811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
リモートセンシングによる物質探査 資源的・素材的見地から;リモートセンシングによる物質探査 資源的・素材的見地から;Material Exploration by Remote Sensing from View Points of Resource and Materials.
Journal of the Mineralogical Society of Japan Pub Date : 1999-08-01 DOI: 10.2465/GKK1952.28.103
Ryoichi Kouda
{"title":"リモートセンシングによる物質探査 資源的・素材的見地から;リモートセンシングによる物質探査 資源的・素材的見地から;Material Exploration by Remote Sensing from View Points of Resource and Materials.","authors":"Ryoichi Kouda","doi":"10.2465/GKK1952.28.103","DOIUrl":"https://doi.org/10.2465/GKK1952.28.103","url":null,"abstract":"Remote sensing is the necessary method to explore the moon and planets. Small planets such as moon and asteroids do not have the biological obstacles and atmosphere which absorb electromagnetic reflection and emission. The moon and asteroids have the naked surface of rocks and regolith to be measured the surface characteristics by remote sensing. The important resource materials can be obtained in the space as water and helium-3 which will be used for the future nuclear fusion reactor rather than rare metals and unknown minerals. The constructive materials are also the candidates of resources in the space. The resources in the space will be constrained by the type of industries and human activities in it.","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130117639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
改良イオンビーム・スパッタ法による高分解能走査電子顕微鏡(HRSEM)観察のための試料作成 利用改进离子波束-溅射方法制作高分辨率扫描电子显微镜(HRSEM)观察的样品
Journal of the Mineralogical Society of Japan Pub Date : 1999-05-31 DOI: 10.2465/GKK1952.28.65
茂男 滝沢, 良樹 大野
{"title":"改良イオンビーム・スパッタ法による高分解能走査電子顕微鏡(HRSEM)観察のための試料作成","authors":"茂男 滝沢, 良樹 大野","doi":"10.2465/GKK1952.28.65","DOIUrl":"https://doi.org/10.2465/GKK1952.28.65","url":null,"abstract":"Ion-beam sputtering deposition is very useful to a nonconductive specimen-preparation technique for ultra-high to high resolution electron microscopy. Application of the sputtering has modified the ion-beam thinning apparatus for preparation of the sample for TEM. Effective use of our modified sputtering apparatus leads to a good conductivity of the Pt-coating composed of finer particles in 1.7nm diamerter, and a surface of crystal can be closely observed under magnifi-cation of more than 100, 000.","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121024354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ゼオライト‐水系ヒートポンプ，応用鉱物学の新分野 沸石-水系热泵，应用矿物学的新领域
Journal of the Mineralogical Society of Japan Pub Date : 1999-05-01 DOI: 10.2465/GKK1952.28.47
溝田 忠人
{"title":"ゼオライト‐水系ヒートポンプ，応用鉱物学の新分野","authors":"溝田 忠人","doi":"10.2465/GKK1952.28.47","DOIUrl":"https://doi.org/10.2465/GKK1952.28.47","url":null,"abstract":"Zeolite-water heat pump system has been discussed as an example of innovative applied mineralogy. Zeolite and water is a marvelous combination to use low temperature waste heat including the solar heat for air conditioning with-out using any other energy such as electricity. A simple and small test model of the heat pump system using Mg, Na-A type zeolite bed has enabled to make ice repeatedly in a glass tube of the diameter of 3cm. Only hot water at 100°C was used as the heat source for dehydrating the zeolite. The lowest temperature of ice reached -18°C. The system will be promised for saving energy through various applications by using huge amount of low temperature heat sources which are wasted now in vain in the world.","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123202248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Numerical Simulation of Development of Silica Alteration Zoning in Geothermal System. Preliminary Study Based on Kinetic Reaction-Transport Model. 地热系统中硅蚀变分带发育的数值模拟基于动力学反应-输运模型的初步研究。
Journal of the Mineralogical Society of Japan Pub Date : 1998-08-01 DOI: 10.2465/GKK1952.27.157
N. Takeno, T. Ishido, J. Pritchett
{"title":"Numerical Simulation of Development of Silica Alteration Zoning in Geothermal System. Preliminary Study Based on Kinetic Reaction-Transport Model.","authors":"N. Takeno, T. Ishido, J. Pritchett","doi":"10.2465/GKK1952.27.157","DOIUrl":"https://doi.org/10.2465/GKK1952.27.157","url":null,"abstract":"Dissolution and precipitation of silica polymorphs (amorphous silica, cristobalite and quartz) are coupled with geothermal reservoir simulator (simulator for hydrodynamic fluid flow in porous media) based on reaction kinetics. Reaction kinetics are simplified as follows; silica polymorphs are always precipitated from or dissolved into the solution without direct solid phase transition among them. Only inorganic processes are considered and the effect of salinity is neglected. Initial reaction surface area is assumed to be unique for both precipitation and dissolution of all polymorphs. Based on these assumptions and published experimental data of rate constants and solubilities, two dimensional numerical simulations of geothermal system development were performed. Alteration zoning of silica polymorphs was reproduced in the calculations as observed in natural geothermal systems. Sensitivity of silica alteration zoning to formation permeability and reaction surface area was also studied. The present model is preliminary, but the results show that numerical simulations incorporating chemical processes are promissing for geothermal modeling, especially for reducing the non-uniqueness of the models.","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"187 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121836108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Atomistic Discussion of Metastable States from Viewpoints of MD Simulations and Experiments 从原子动力学模拟和实验的角度讨论亚稳态
Journal of the Mineralogical Society of Japan Pub Date : 1998-08-01 DOI: 10.2465/GKK1952.27.137
T. Tsuchiya, T. Yamanaka
{"title":"Atomistic Discussion of Metastable States from Viewpoints of MD Simulations and Experiments","authors":"T. Tsuchiya, T. Yamanaka","doi":"10.2465/GKK1952.27.137","DOIUrl":"https://doi.org/10.2465/GKK1952.27.137","url":null,"abstract":"Comprehension of metastable states in the course of phase transition, decomposition, melting, crystallization is one of significant subjects in the solid state earth dynamics. The following categories in the electronic, atomic or lattice transformation must be taken into account for the metastable phenomena of the above structure changes; (A) kinetic factor such as nucleation rate, growth rate, rate of compression and depression, heating rate and reaction duration, (B) environmental physical and thermodynamical parameters. In addition to experimental approaches to clarify metastable states, atomistic computer simulations offer informations of the precursor phenomena of structure changes under the desired physical conditions. For an example of these calculations, present MD calculation simulates the mechanism of pressure-induced amorphization of GeO2 and its polymorphic phase transformation of post-rutile phase under hydrostatic and nonhydrostatic conditions.","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130727859","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
XPS(ESCA)による鉱物の表面分析技術 XPS(ESCA)矿物表面分析技术
Journal of the Mineralogical Society of Japan Pub Date : 1997-11-30 DOI: 10.2465/GKK1952.26.198
珠郎 八田
{"title":"XPS(ESCA)による鉱物の表面分析技術","authors":"珠郎 八田","doi":"10.2465/GKK1952.26.198","DOIUrl":"https://doi.org/10.2465/GKK1952.26.198","url":null,"abstract":"","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134198364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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