| 王奖臻,李泽琴,刘家军,李朝阳.拉拉铁氧化物-铜-金-钼-钴-稀土矿床辉钼矿的多型及标型特征[J].地质找矿论丛,2004,(2):96-99 |
| 拉拉铁氧化物-铜-金-钼-钴-稀土矿床辉钼矿的多型及标型特征 |
| POLYTYPE AND TYPOMORPHIC CHARACTERISTICS OF MOLYBDENITE FROM LALA Fe-OXIDE-Cu-Au-Mo-Co-REE DEPOSIT IN SICHUAN PROVINCE, CHINA |
| 投稿时间：2003-08-27 修订日期：2004-03-08 |
| DOI：10.6053/j.issn.1001-1412.2004.2. 006 |
| 中文关键词: 铁氧化物铜金铀稀土矿床 辉钼矿 多型 华南 |
| 英文关键词:Fe-Oxide-Cu-Au-U-REE deposit molybdenite polytype South China |
| 基金项目:国家自然科学基金项目(40172039);中国科学院知识创新项目(KZCX2 101)资助。 |
| 作者 | 单位 | | 王奖臻 | 成都理工大学, 环境与土木工程学院, 四川, 成都, 610059 | | 李泽琴 | 成都理工大学, 环境与土木工程学院, 四川, 成都, 610059 | | 刘家军 | 中国地质大学地矿系, 北京, 100083 | | 李朝阳 | 中国科学院, 地球化学研究所, 贵州, 贵阳, 550002 |
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| 中文摘要: |
| 用X射线衍射和电子探针等方法,研究了拉拉铁氧化物-铜-金-钼-钴-稀土矿床辉钼矿的标型特征。结果表明,辉钼矿有2H+3R和2H两种多型。2H+3R型辉钼矿中Se,Te,Cu质量分数较高,平均分别为0.16%,0.06%和0.39%;2H型的Se,Te,Cu质量分数较低,分别为0.05%,0.03%和0.24%。2H+3R型辉钼矿中的w(Re)较高,平均为112×10-6。辉钼矿的铅同位素放射成因铅极高,w(206Pb)/w(204Pb),w(207Pb)/w(204Pb),w(208Pb)/w(204Pb)比值分别为50.622～70.573,17.719～19.100,43.013～46.324;硫同位素具陨石硫特征。辉钼矿与黄铜矿等硫化物具有相同的物质来源和成因机制。 |
| 英文摘要: |
| So far Lala is the exclusivel Fe-Oxide-Cu-Au-Mo-Co-REE deposit reported in China. Molybdenum mineralization is very strong in the deposit. Lala deposit contains about 20 Mt ore of average Mo, 0.03%. It has been determined by X-ray that molibdenite from the deposit is 2H+3R and 2H types （see to Fig.1 and Table 1）. The averages content of Se, Te, and Cu in 2H+3R molybdenite is 0.16%, 0.06%, and 0.39%, respectively. The average content of these elements in 2H molybdenite is 0.05%, 0.03%, and 0.24%, respectively. The content of Re in the 2H+3R molybdenite ranges from 111.88×10-6 to （121.50）×10-6. The lead isotope ratios of molybdenite from the deposit vary considerably, 206Pb/(204)Pb?207Pb/204Pb?208Pb/204Pb are 0.622～70.573, 17.719～19.100, and 43.013～46.324, respectively. The sulfur isotope composition, δ34S‰, range from 1.82 to 2.25.It is suggested that molybdenite and chalcopyrite and other sulfides are of the same source and genesis. |
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