1999 Fiscal Year Final Research Report Summary
Development of an X-rag analytical microscope for the textural study of polycrystalling
| Project/Area Number |
09354007
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
KITAMURA Masao Kyoto University, Graduate School of Science, Professor, 大学院・理学研究科, 教授 (70004489)
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| Co-Investigator(Kenkyū-buntansha) |
HOSOKAWA Yoshinori Horiba, Chief, 技術部長
SHIMOBAYASHI Norimasa Kyoto University, Graduate School of Science, Assistant Professor, 大学院・理学研究科, 助手 (70235688)
HIRAJIMA Takao Kyoto University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (90181156)
WALLIS Simon Kyoto University, Graduate School of Science, Assistant Professor, 大学院・理学研究科, 助手 (30263065)
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| Project Period (FY) |
1997 – 1999
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| Keywords | X-ray analytical microscope / polycrystalline / textural observation / X-ray diffraction / X-ray fluovescence |
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| Research Abstract |
Textures on rocks and minerals provide indispensable information for the study of the natural history of earth and planets. The purpose of the present study is to develop an analytical X-ray microscope for the study of rocks and minerals. In the term of the project, we performed the following subjects. (1)A goniometer was designed and constructed to allow the change of the orientation of a specimen, which is required to carry out the analyses by X-ray fluorescence, X-ray diffraction and Berg-Barret methods for each point of a specimen under an analytical X-ray microscope. (2)A new system was constructed for mapping of characteristic X-rays and X-ray diffracted beams by using the newly developed goniometer and computer-control system. (3)The analytical X-ray microscope was developed for the usage under vacuum conditions to detect effectively the characteristic X-rays from light elements such as Na which are main constituent elements of natural minerals. (4)The internal textures of opticallyisotropic crystals of diamond, garnet and fluorite and some other minerals such as trapicheruby were observed under the new X-ray analytical microscope. Through the observation, we succeeded in obtaining new information about the genesis of the internal texture, especially for the habit change of twinned diamond and fluorite and the origin of the trapiche structure. (5)The present results of the textural observation indicate the validity of the new X-ray analytical microscope is useful to study of the genesis of minerals and rocks.
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