| Title Transcription | シマネケン ミトチョウ ホクトウブ サングン ヘンセイガンチュウ ノ タンコウショク リョクレンセキ
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| Title Alternative (English) | Pink-colored epidote from the Sangun metamorphic rocks in the northeastem part of Mito-cho, Shimane Prefecture, Japan
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| File | |
| language |
jpn
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| Author |
Shingu, Atsuhiro
Akasaka, Masahide
Yamaguchi, Yoshiaki
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| Description | Pink-colored epidote, from the Sangun metamorphic rocks in the northeastem part of Mito-cho, Shimane Prefecture, was described.
This mineraHorms thin layer, lens or veinlet in the pelitic schist. It occurs as euhedral to subhedral crystals up to about 0.8 mm long. lt is slightly reddish under the microscope and pleochroism is not distinct. It is optically biaxial negative, 2V(meas)=74～79°. It shows complex zonal stmcture, sector zoning and parallel intergrowth composed of relatively Fe-rich and Al-poor epidote and Fe-poor and Al-rich one. The pistacite component varies from 12.3 to 19.1 mol%. This mineral contains Mn as Mn_2O_3 up to 0.77 wt.%. According to the thermal analyses, it dehydrates at 932 and 973℃. Unit-cell parameters calculated from the X-ray powder diffraction patterns are : a=8.884(4), b-5.615(3), c=10.153(5)Å, β=115.41(2)°, V=457.4(4)Å^3. |
| Journal Title |
Geological reports of Shimane University
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| Volume | 9
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| Start Page | 9
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| End Page | 16
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| ISSN | 0287816X
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| Published Date | 1990-07-30
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| NCID | AN00054980
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| Publisher | 島根大学理学部地質学教室
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| Publisher Aalternative | Department of Geology, Faculty of Science, Shimane University
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| NII Type |
Departmental Bulletin Paper
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| OAI-PMH Set |
Faculty of Science and Engineering
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| Remark | 1-11 / 1982-1992
横山鼎教授,三梨昴教授退官記念論誌集
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| 他の一覧 |
