| 钪的有关问题暨滇中地区基性-超基性岩含钪性研究 |
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| 关键词:scandium basic-ultrabasic intrusions scandium-bearing central Yunnan |
| 基金项目:国土资源部公益性行业科研专项经费项目(编号: 201211078);国家自然科学基金项目(编号: 41072073) |
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| Some Problems concerning Scandium and Scandium-bearing Potential of the Mafic-ultramafic Intrusions in Central Yunnan Province |
| Scandium is a strategic mineral resource with irreplaceable importance for utilization in such fields as airplane, spacecraft, atomic power station, high-effective multi-function laser, solid electrolyte, special ceramics, motor vehicle, ships, high-power metal halogen lamp, solar energy storage battery, and sport equipment. The basic-ultrabasic intrusions in central Yunnan are located at the southern end of the Xichang-Yuanmou basic-ultrabasic intrusion zone. These intrusions, tectonically assigned to the “Alaska type” basic-ultrabasic intrusions and characterized by thermal emplacement, are products of the activities of Late Permian Emeishan Large Igneous Province (ELIP). They are different in mineralization and tectonic setting from the “Alpine-type” intrusions resulting from the cold emplacement in the Ailaoshan Ophiolitic Melange Zone (such as the Shuanggou ultrabasic rock). Mineralization of the basic-ultrabasic-alkaline intrusions in central Yunnan, besides iron (vanadium-titanium) mineralization focused previously, is generally of scandium mineralization. The Ertaipo complex, in particular, is characterized by distinctive fractionation, forming two end members: light-color and deep-color members. The Ertaipo intrusion (complex) is a light-colored member, consisting of dark gray magnetite-bearing pyroxene syenite, light gray hornblende syenite, grayish white monzonite, and magnetite-bearing syenitic gabbro (with magnetite 20%, or total iron 9%; Sc2O3 60-110 g/t). The basic-ultrabasic intrusions are rich in scandium, of which the Ertaipo intrusion possesses Sc2O3 resource of above 720 tons. Together with the other intrusions in neighboring areas, such as Aoxihe and Wanchang, the total Sc2O3 resources have been up to 6500 tons, as revealed by work of recent years. The basic-ultrabasic intrusion belt from Mouding to Lüzhijiang is 130 km in length, within which there are more than 60 basic-ultrabasic intrusions (groups) of this kinds. It is estimated that the resources potential of Sc2O3 is up to several ten thousand tones, and the reserves are hopeful of attaining or excessing the Sc2O3 resources of 38700 tones in Panzhihua area, Sichuan. |
| GUO Yuan-sheng,ZENG Pu-sheng,GUO Xin,CUI Yin-liang,YANG Xue-shan,LU Wen-ju,GUO Qiang,YANG Zong-liang.2012.Some Problems concerning Scandium and Scandium-bearing Potential of the Mafic-ultramafic Intrusions in Central Yunnan Province[J].Acta Geoscientica Sinica,33(5):745-754. |
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