746 Large Igneous Province (ELIP). They are different in mineralization and tectonic setting from the Alpine-type intrusions resulting from the cold e

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1 Sep : Acta Geoscientica Sinica Vol.33 No.5: www. 地球学报.com - 摘 1), 2, 3), 4), 1), 1), 1), 1), 1) 1), ; 2), ; 3), ; 4), 要 : -, -, ( ) -, ( ), -,, ,, 20%, (TFe) 9%, Sc 2 O g/t, (Sc 2 O 3 ) 720, Sc 2 O km, - ( )60, - Sc 2 O 3, Sc 2 O 3 (3.87 ), 关键词 : ; - ; ; 中图分类号 : P618.73; P 文献标志码 : A doi: /cagsb Some Problems concerning Scandium and Scandium-bearing Potential of the Mafic-ultramafic Intrusions in Central Yunnan Province GUO Yuan-sheng 1), ZENG Pu-sheng 2, 3), GUO Xin 4), CUI Yin-liang 1), YANG Xue-shan 1), LU Wen-ju 1), GUO Qiang 1), YANG Zong-liang 1) 1) Yunnan Nonferrous Metals Geology Bureau, Kunming, Yunnan ; 2) National Research Center for Geoanalysis, Beijing ; 3) Key Laboratory of Ecological Geochemistry, MLR, Beijing ; 4) Yunnan Land and Resources Vocational college, Kunming, Yunnan Abstract: 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 ( : ) ( : ) : ; : : :,, 1958,

2 746 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%; Sc 2 O g/t). The basic-ultrabasic intrusions are rich in scandium, of which the Ertaipo intrusion possesses Sc 2 O 3 resource of above 720 tons. Together with the other intrusions in neighboring areas, such as Aoxihe and Wanchang, the total Sc 2 O 3 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 Sc 2 O 3 is up to several ten thousand tones, and the reserves are hopeful of attaining or excessing the Sc 2 O 3 resources of tones in Panzhihua area, Sichuan. Key words: scandium; basic-ultrabasic intrusions; scandium-bearing; central Yunnan, (Sc 2 O 3 >0.05%),,,, 1 钪资源概述, 21, Ⅲ, (Cotton et al., 1988) 2.80 g/cm 3, g/cm 3,,, Sc 2 O 3,,, ,,,, (Guo et al., 1988; Hedrick, 2010; Irvine et al., 2005) (Shalomeev et al., 2008); (, 2006;, 2007) ( ) (Hedrick, 2010) 1.2, 200, 9 % 95%, (Cordier, 2011) (Darby, MT.) (Crystal Mountain), 1990, (Hedrick, 2010; Cordier, 2011) 1.3 (2007),, (Sc) (Sc), 29, 51%; (Sc) (Sc) (Sc), 26, 49%, Sc 65.7, 32.8%,, (, 2010),,

3 : 滇中含钪基性 - 超基性侵入体 2.1 -, (, 1987;, 1984; Wang et al., 2006a, b) (, 2002, 2003, 2004, 2005, 2006, 2007a, 2007b, 2008, 2010, 2011;, 1989) (Zhou et al., 2002, 2005) ( 1); (ELIP), (Fe-V-Ti) (Cu-Ni-PGE) (, 1986;, 1987;, 2004;, 2009;, 2009;, 2006, 2007b); - 图 1 滇中地区的基性超基性侵入体及相关矿产 ( 据云南省有色地质局, 2010 年补充修改 ) Fig. 1 Basic-ultrabasic intrusions and related mineral resources in central Yunnan (after Yunnan Nonferrous Geology Bureau(YNGB), 2010)

4 748 图 2 绿汁江基性超基性岩带及有关矿产分布图 Fig. 2 Distribution of basic-ultrabasic intrusion belt and mineral resources, (Cr), (, 1984) 2.2 -, 2009,,, (, 1996;, 2010),,, 2010,, ,,,,,,, km,, 60 ( ) ( 2): 北段 :,, 50 km, ( )40,,,,,, m, m, ( ), 1 ( ), ( ), 中段 :,, 60 km, 10 ( ), ( ), -,,,, ; 400 m, 2 ( ), 1 ( ), ( )

5 : 749 图 3 云南牟定二台坡杂岩体地质简图 Fig. 3 Simplified geological map of Ertaipo complex in Mouding, Yunnan Fig. 4 图 4 二台坡杂岩体 0 号剖面图 Profile of No. 0 section of Ertaipo complex, Mouding, Yunnan

6 750 南段 :, ( ), 30 km, -, 3000 m,, 860 m ( ), - -, - (260 Ma,, Zhou et al., 2005),, (80 Ma ), (12.99~14.53 Ma) (, 2008), 1 ( ); 1 ( ),,, ( 3) 2.3, NE 23 km Sc 2 O g/t, Sc 2 O 3 80 g/t , ( ) ( ),,,,,,, km 2 ( 3) 55, 360 m, m,, 330,, 100 m, 200 m,, 30 40, 20%,, (TFe)9%, Sc 2 O g/t 2,, ( 4),, 2.3.1, ( 2),,, : (1) :,, ( ) ( 1), (, 1992), (2),, ( ) ( ) ;,,, ( );,,, ( ) ( ) (3), TFe (TFe)1 % 17%, (mfe )7% 12%, Sc 2 O 3, TFe, Sc 2 O 3, TFe, Sc 2 O 3 (4) K 2 O+Na 2 O (8.85% 10.02%), Sc 2 O 3 ; K 2 O+Na 2 O (1.5l% 5.4%), Sc 2 O 3 ; (K 2 O+Na 2 O>8%) Sc 2 O 3 (5), Sc 2 O 3 10% 20%, Sc 2 O 3 60% 90.5% (6) X-,,,, ( 3),, (Sc 2 O 3 30~70 g/t),, - :

7 : 751, 50 g/t( 1, 2),, 20%, (TFe)9%, Sc 2 O 3 60~110 g/t, (Sc 2 O 3 ) 720, ( 10 t) 表 1 二台坡凹溪河碗厂各类岩石含钪情况统计表 Table 1 Statistics of scandium in various rocks of Ertaipo, Aoxihe, and Wanchang areas ( ) Sc 2 O 3 (g/t) Sc 2 O 3 (g/t) ( ) 表 2 二台坡岩体及围岩部分样品 Sc 2 O 3 含量 (g/t) Table 2 Sc 2 O 3 content of Ertaipo intrusion and wall rock (g/t) ICP-OES ICP-MS ICP-MS Sc 2 O 3 Sc Sc 2 O 3 Sc Sc 2 O 3 Sc B B B B B B B B B B B B B-13 ( ) B

8 752 表 3 钪在各主要矿物中的分配率 Table 3 Distribution of scandium in main minerals (%) Sc 2 O 3 (g/t) Sc 2 O 3 (g/t) Sc 2 O ( ) :, Sc 2 O , - ( )60, - Sc 2 O 3, Sc 2 O 3 (3.87 ), ( ),, 6, - - ( ),, : (1) : (Sc 2 O 3 )87.8 g/t,, (2011) ( ),,, (2) :, - -, Sc 2 O g/t (3) : ( HCl 22.8%), 4 1 #, 90, 12, 89.10% (4) :, P501, 25, ; P501 P507 (5) : +,, Sc 2 O 结论, -,,, (Sc 2 O 3 >50 g/t), - - ( ), 致谢 : 北京矿冶研究总院和中国地质科学院地球物理化学勘查研究所承担样品测试, 昆明理工大学承担的选矿 - 萃取试验, 在此一并表示感谢参考文献 :,, Ar/ 39 Ar : [J]., 50(2): , [J]., (S1): ,, [J]., 12(4): ,,,, [J]., (5): [J]., 6(3): ,,,,, [J]., 18(1):

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