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The deposit occurs in the Jinchuan ultramafic intrusive body, one of mafic-ultramafic rock bodies which intruded into the pre-Cambrian metamorphic rocks in the Caledonian, along the second order fractures derived from a deep fracture. This developed in the north of the west edge of the Alashan uplifting within the North China Metaplatform. Ores are classified, on megascopic textural characteristics, into three types, sideronitic, spotted and disseminated ores. They almost always contain pyrrhotite (Fe\u003c1-x\u003eS), pentlandite ((Fe, Ni)_9S_8), chalcopyrite (CuFeS_2) and serpentine (Mg_6Si_4O\u003c10\u003e(OH)_8) as common major ore constituting minerals. Mackinawite (FeS) and cubanite (CuFe_2S_3) often appear as exsolution product from earlier sulfide minerals. Violarite (FeNi_2S_4) and smythite (Fe_9S_\u003c11\u003e) occur as alteration product from pentlandite. A small amount of bornite (Cu_5FeS_4) and pyrite (FeS_2) can be found in some of disseminated ores. Sideronitic ore, composing the main parts of the rich ore bodies, shows textures typical for magmatic nickel-copper sulfide deposits. Sulfides are occupying and cementing grain boundaries of such gangue minerals as olivine, pyroxene, etc. or their altered minerals. Occasionally, gangue minerals maintain their primary crystal form completely. In sideronitic ore, sulfides usually contain many contraction cracks which are filled with serpentine, suggesting that the cooling of the sulfide melt proceeded very rapidly. Contraction cracks become more narrow in spotted ore than in sideronitic ore and they are rarely found in disseminated ore. Pyrrhotite group minerals in sideronitic ores include troilite (FeS), hexagonal (Fe_\u003c1-x\u003eS) and monoclinic (Fe_7S_8) pyrrhotites, but those in spotted and disseminated ores are dominated overwhelmingly by monoclinic pyrrhotite. Troilite and hexagonal pyrrhotite rich in iron often contain \"flame\" pentlandite exsolved from high-temperature pyrrhotite phase with decrese in temperature. The \"flame\" penlandite cannot be found in monoclinic pyrrhotite. In contrast to this, monoclinic pyrrhotite contains more nickel in its structure than troilite or hexagonal pyrrhotite. The nickel content in monoclinic pyrrhotite ranges from 0.05 to 0.20 weight percent, while usually, that in troilite or hexagonal pyrrhotite is less than 0.0n weight percent and hardly exceeds 0.03 weight percent. Ordinary pentlandite contains 25 to 27 atomic percent of nickel regardless of ore type, but nickel content in \"flame\" pentlandite is around 18 atomic percent. A kind of sideronitic ore unusually rich in chalcopyrite includes pentlandite containing 0.5 to 1.3 weight percent of cobalt, but coexisting pyrrhotite or chalcopyrite does not contain cobalt in amounts detectable with EPMA. An earthy mineral found in spotted ore contains more than 10 weight percent copper and about 0. n weight percent nickel. It shows a very clear anisotropic property, suggesting it is a mineral belonging to the valleriite ([(Cu, Fe)S]_4 [(Mg, Al)(OH)_2]_3)-haapalaite ([(Fe, Ni)S]_4 [(Mg, Fe)(OH)_2]_3) family. This mineral must be \"bokudokou\", ([CuFeS_2][(Mg, Al, Fe)(OH)_2]), so called in China. Some disseminated ores contain garnierite ((Mg, Ni)_6Si_4O_\u003c10\u003e(OH)_8) whose nickel-content ranges from 0.5 to 1.0 weight percent, although usual nickel-content in serpentine does not exceed 0.0n weight percent.", "subitem_description_type": "Abstract"}]}, "item_4_description_41": {"attribute_name": "資源タイプ", "attribute_value_mlt": [{"subitem_description": "紀要類(bulletin)", "subitem_description_type": "Other"}]}, "item_4_description_66": {"attribute_name": "フォーマット", "attribute_value_mlt": [{"subitem_description": "2312665 bytes", "subitem_description_type": "Other"}]}, "item_4_description_81": {"attribute_name": "dc.description.provenance", "attribute_value_mlt": [{"subitem_description": "Made available in DSpace on 2008-05-02T06:18:02Z (GMT). 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<報文>中国金川鉱床産ニッケル-銅鉱石の構成鉱物とその組織
http://hdl.handle.net/10097/32945
http://hdl.handle.net/10097/32945bb280abd-d147-4eb9-b6ad-04982f2da4da
名前 / ファイル | ライセンス | アクション |
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KJ00000135453.pdf (2.3 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2008-05-02 | |||||
タイトル | ||||||
タイトル | <報文>中国金川鉱床産ニッケル-銅鉱石の構成鉱物とその組織 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ultramafic rock | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | magmatic deposit | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | magmatic ore | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | sulfide ore | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | nickel ore | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | copper ore | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | ore texture | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | pyrrhotite | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | pentlandite | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | chalcopyrite | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | mackinawite | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | cubanite | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | bokudokou | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | valleriite | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | haapalaite | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | garnierite | |||||
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 | |||||
著者 |
鹿野, 新平
× 鹿野, 新平× 孫, 国雄× 北村, 強 |
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著者(ヨミ) | ||||||
姓名 | KANO, Shimpei | |||||
著者(ヨミ) | ||||||
姓名 | SUN, Kuoxiong | |||||
著者(ヨミ) | ||||||
姓名 | KITAMURA, Tsuyoshi | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Magmatic nickel-copper ores from the Jinchuan deposit, Gansu Province, China, were analyzed mineralogically with the aid of optical microscope, EPMA, X-ray diffractometer and AAS. The deposit occurs in the Jinchuan ultramafic intrusive body, one of mafic-ultramafic rock bodies which intruded into the pre-Cambrian metamorphic rocks in the Caledonian, along the second order fractures derived from a deep fracture. This developed in the north of the west edge of the Alashan uplifting within the North China Metaplatform. Ores are classified, on megascopic textural characteristics, into three types, sideronitic, spotted and disseminated ores. They almost always contain pyrrhotite (Fe<1-x>S), pentlandite ((Fe, Ni)_9S_8), chalcopyrite (CuFeS_2) and serpentine (Mg_6Si_4O<10>(OH)_8) as common major ore constituting minerals. Mackinawite (FeS) and cubanite (CuFe_2S_3) often appear as exsolution product from earlier sulfide minerals. Violarite (FeNi_2S_4) and smythite (Fe_9S_<11>) occur as alteration product from pentlandite. A small amount of bornite (Cu_5FeS_4) and pyrite (FeS_2) can be found in some of disseminated ores. Sideronitic ore, composing the main parts of the rich ore bodies, shows textures typical for magmatic nickel-copper sulfide deposits. Sulfides are occupying and cementing grain boundaries of such gangue minerals as olivine, pyroxene, etc. or their altered minerals. Occasionally, gangue minerals maintain their primary crystal form completely. In sideronitic ore, sulfides usually contain many contraction cracks which are filled with serpentine, suggesting that the cooling of the sulfide melt proceeded very rapidly. Contraction cracks become more narrow in spotted ore than in sideronitic ore and they are rarely found in disseminated ore. Pyrrhotite group minerals in sideronitic ores include troilite (FeS), hexagonal (Fe_<1-x>S) and monoclinic (Fe_7S_8) pyrrhotites, but those in spotted and disseminated ores are dominated overwhelmingly by monoclinic pyrrhotite. Troilite and hexagonal pyrrhotite rich in iron often contain "flame" pentlandite exsolved from high-temperature pyrrhotite phase with decrese in temperature. The "flame" penlandite cannot be found in monoclinic pyrrhotite. In contrast to this, monoclinic pyrrhotite contains more nickel in its structure than troilite or hexagonal pyrrhotite. The nickel content in monoclinic pyrrhotite ranges from 0.05 to 0.20 weight percent, while usually, that in troilite or hexagonal pyrrhotite is less than 0.0n weight percent and hardly exceeds 0.03 weight percent. Ordinary pentlandite contains 25 to 27 atomic percent of nickel regardless of ore type, but nickel content in "flame" pentlandite is around 18 atomic percent. A kind of sideronitic ore unusually rich in chalcopyrite includes pentlandite containing 0.5 to 1.3 weight percent of cobalt, but coexisting pyrrhotite or chalcopyrite does not contain cobalt in amounts detectable with EPMA. An earthy mineral found in spotted ore contains more than 10 weight percent copper and about 0. n weight percent nickel. It shows a very clear anisotropic property, suggesting it is a mineral belonging to the valleriite ([(Cu, Fe)S]_4 [(Mg, Al)(OH)_2]_3)-haapalaite ([(Fe, Ni)S]_4 [(Mg, Fe)(OH)_2]_3) family. This mineral must be "bokudokou", ([CuFeS_2][(Mg, Al, Fe)(OH)_2]), so called in China. Some disseminated ores contain garnierite ((Mg, Ni)_6Si_4O_<10>(OH)_8) whose nickel-content ranges from 0.5 to 1.0 weight percent, although usual nickel-content in serpentine does not exceed 0.0n weight percent. | |||||
書誌情報 |
東北大學選鑛製錬研究所彙報 = Bulletin of the Research Institute of Mineral Dressing and Metallurgy, Tohoku University 巻 44, 号 1, p. 15-30, 発行日 1988-09-30 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0040876X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00168425 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
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 | |||||
その他の言語のタイトル | ||||||
その他のタイトル | <Original Papers>Constituent Minerals and Textures of Nickel-Copper Sulfide Ores from the Jinchuan Deposit, China | |||||
出版者 | ||||||
出版者 | 東北大學選鉱製錬研究所 | |||||
資源タイプ | ||||||
内容記述タイプ | Other | |||||
内容記述 | 紀要類(bulletin) | |||||
登録日 | ||||||
日付 | 2008-05-02 | |||||
日付タイプ | Created | |||||
公開日(投稿完了日) | ||||||
日付 | 2008-05-02 | |||||
日付タイプ | Created | |||||
発行日 | ||||||
日付 | 1988-09-30 | |||||
日付タイプ | Created | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | 2312665 bytes | |||||
公開範囲 | ||||||
値 | 学外 | |||||
更新日 | ||||||
日付 | 2010-01-27 | |||||
日付タイプ | Created |