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岩手大学教育学部卒論研究で行った県内の主要な金鉱山の調査結果
https://doi.org/10.15113/0002000290
https://doi.org/10.15113/0002000290d6ff938d-13f9-4ef8-b052-8b7871dda330
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
arhs-v12p1-14.pdf (13.2 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||||||||||
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| 公開日 | 2024-05-17 | |||||||||||||||||||||
| タイトル | ||||||||||||||||||||||
| タイトル | 岩手大学教育学部卒論研究で行った県内の主要な金鉱山の調査結果 | |||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||
| タイトル | ||||||||||||||||||||||
| タイトル | A Preliminary Report on the Major Gold Deposits distributed in the Iwate Prefecture, NE Japan | |||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| 著者 |
苗村, 康輔
× 苗村, 康輔
× 蒲田, 理
× 古澤, 菜々美
× 若松, 咲樹
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| アクセス権 | ||||||||||||||||||||||
| アクセス権 | open access | |||||||||||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||||||||||
| 抄録 | ||||||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||||||
| 内容記述 | Abstract: This is a preliminary report on the major gold deposits distributed in the Iwate prefecture, NE Japan. We took gold ores from seven localities, including Ogayu, Meushi, Ohinata, Urushiyama, Hounoki, Doba, and Tamayama gold deposits. Except for samples from Tamayama deposit, gold ores in the Kitakami mountain displays a multilayer structure consisting of repeated alternating of quartz veins and country rocks. In order to identify gold and associated sulfides, hundred gram ore samples from each locality were crushed, and constituent minerals were identified under the optical microscope. Several minute gold particles were identified in all of the samples. Some gold particles are attached with other minerals, such as pyrite in Hounoki and a Bi-Te mineral in Ogayu. This suggests that parental hydrothermal fluids precipitated gold with sulfides or a Bi-Te mineral. These ore samples were classified into two types based on sulfide speciation, namely pyrite- and arsenopyrite types. Ore samples from Ogayu, Doba and Tamayama were classified as pyrite type, those from Meushi, Urushiyama, Ohinata were arsenopyrite type, and Hounoki sample is betwixt. In spite that pyrite type ore samples contain significant gold particles, some arsenopyrite type ore also contains significant ones that obscure the correlation. Au/(Au+Ag) contents in gold particles range from 83 to 99, and this values have been generally regarded as indicator of degree of alteration as silver decrease with increasing degree of alteration. In order to understand the major factor controlling gold contents in ore samples, chemical compositions, such as Li, B and SO4 2- and NaCl contents, of parental hydrothermal fluids should be analyzed and combined with sulfides type obtained in this study. |
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| 言語 | en | |||||||||||||||||||||
| 出版者 | ||||||||||||||||||||||
| 出版者 | 岩手大学平泉文化研究センター | |||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||
| 出版者 | ||||||||||||||||||||||
| 出版者 | Center for Hiraizumi Studies | |||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| 登録日 | ||||||||||||||||||||||
| 日付 | 2024-05-17 | |||||||||||||||||||||
| 日付タイプ | Created | |||||||||||||||||||||
| 言語 | ||||||||||||||||||||||
| 言語 | jpn | |||||||||||||||||||||
| 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 | |||||||||||||||||||||
| 出版タイプ | ||||||||||||||||||||||
| 出版タイプ | VoR | |||||||||||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||||||||||
| ID登録 | ||||||||||||||||||||||
| ID登録 | 10.15113/0002000290 | |||||||||||||||||||||
| ID登録タイプ | JaLC | |||||||||||||||||||||
| NCID | ||||||||||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||||||||||
| 収録物識別子 | AA12609300 | |||||||||||||||||||||
| 書誌情報 |
ja : 岩手大学平泉文化研究センター年報 en : Hiraizumi studies 巻 12, p. 1-14, ページ数 14, 発行日 2024-03-29 |
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| 収録物識別子タイプ | PISSN | |||||||||||||||||||||
| 収録物識別子 | 2187-7904 | |||||||||||||||||||||
