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群馬県片品村赤澤鉱山からトパーズ含有鉱石の発見
http://hdl.handle.net/10087/6833
http://hdl.handle.net/10087/68334fc4e08b-5ccf-44dd-a75a-e7aed416292a
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
03_YOSHIKAWA.pdf (4.1 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2012-05-08 | |||||
| タイトル | ||||||
| タイトル | 群馬県片品村赤澤鉱山からトパーズ含有鉱石の発見 | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| その他のタイトル | ||||||
| その他のタイトル | The occurrence of topaz-bearing ore from Akazawa mine, Katashina, Gunma, Japan | |||||
| 著者 |
吉川, 和男
× 吉川, 和男× 真崎, 将太× 小林, まさ代 |
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| 著者別名 |
Yoshikawa, Kazuo
× Yoshikawa, Kazuo× Mazaki, Shota× Kobayashi, Masayo |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The topaz-bearing ores were found from the Akazawa mine,Katashina,Gunma Prefecture,Japan. This\nis the first finding of topaz from the mines in Gunma Prefecture. The Akazawa mine is an abandoned copper\nmine and the ore deposit lies in the Okunikkou rhyolites (late Cretaceous～Paleozoic).\nSeventeen minerals were found in the wastes from the Akazawa mine:chalcopyrite,sphalerite,arsenopyrite,\npyrite, pyrrhotite, galena, native sulfur, quartz, topaz, calcite, chlorite, sericite, kaolinite, feldspar, anglesite,\ngoethite and jarosite. The unit-cell dimensions of chalcopyrites, sphalerites, arsenopyrites, pyrites,\npyrrhotites, galena, quartzes and topazes were calculated. Galena occurs only in the wastes carrying topaz.\nAnglesites are formed at the margin or along the cleavage planes of galena. A small amount of sericite and\nkaolinite occur only in topaz-bearing wastes. Most of gangue minerals are quartz. Two kinds of quartz are\nfound in the topaz-bearing wastes. One is coarse-grained euhedral to subhedral crystals or their fragments.\nThe other occurrence is fine-grained quartz mosaic,surrounding coarse-grained quartz. Some coarse-grained\nquartzes are partly corroded and are recognized the successively growing after the corrosion.\nTopaz occurs in a few wastes as the radial aggregates of colorless columnar crystals (usually less than\n0.1mm in long) around chalcopyrites, sphalerites and galenas. In the quartz mosaic, topazes crystallize\nbetween quartz grains and seem to be going to replace quartzes. The OH/(OH＋F) value of topaz was\nestimated from the unit-cell dimensions and volume (Wunder et al. 1993). The average value was 0.21\natom.％ and this is corresponding to 16.39wt％ in F contents of the topaz.The temperature of the formation of the arsenopyrite from the Akazawa mine is 490～560℃,on the basis\nof the arsenopyrite geothermometer by Sharp et al. (1985). | |||||
| 書誌情報 |
群馬大学教育学部紀要. 自然科学編 巻 60, p. 15-25, 発行日 2012-02-14 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0017-5668 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00068497 | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | departmental bulletin paper | |||||
| 出版者 | ||||||
| 出版者 | 群馬大学教育学部 | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Departmental Bulletin Paper | |||||
| 更新日 | ||||||
| 日付 | 2017-03-27 | |||||
| 日付タイプ | Created | |||||
