Geochemistry, Zircon U-Pb Dating and Tectonic Setting of the Granitoid Related with the Dayangshan Molybdenum Deposit, Daxinganling

doi:10.19657/j.geoscience.1000-8527.2020.05.20

Abstract

Abstract:

The Dayangshan molybdenum deposit is a newly discovered small deposit in the Huzhong area, northeast of Daxinganling. The ore is mainly hosted by the quartz-monzonite porphyry and hanging wall rock, and its occurrence is controlled by the quartz-monzonite porphyry. U-Pb dating of the quartz-monzonite porphyry using LA-ICP-MS yielded an age of (119.83±0.87) Ma, indicating that the mineralization in the Dayangshan molybdenum deposit occurred in the Early Cretaceous. The geochemical data of the quartz-monzonite porphyry show that the rock is relatively enriched in Al(Al₂O₃=15.04%-15.31%) and K(K₂O/Na₂O=1.15-1.21) and depleted in Ti(TiO₂=0.36%-0.39%). These characteristics show that the quartz-monzonite porphyry is a potassic basaltic rock, which is normally formed in orogenic belt settings, and magmatic melts which produce these rocks do not interact with mantle. In addition, the rock is relatively enriched in LILEs (e.g., Rb and K), and depleted in HFSEs(e.g.,Nb, Ta, P, Ti and HREE), depleted in mantlephilic elements, enriched in LREE ((La/Sm)_N=4.62-4.64), and with medium Eu value (δEu=0.46-0.48), suggesting that it was crystallized from a magma originated from continental crust. Based on the regional geological data, we argue that the source of ore-forming material was derived from the remelted crust related to the subduction and closure of the Mongolia-Okhotsk Ocean, and the mineralization occurred in the extensional tectonic setting. The study supplemented the data of regional metallogenic regularity and provided basis for regional metallogenic prediction.

Key words: molybdenum deposit, Early Cretaceous, remelting of the crust, Dayangshan, Daxinganling, Mongolia-Okhotsk Ocean

CLC Number:

YANG Yuanjiang, LI Chenglu, DENG Changzhou, LI Wenlong, ZHANG Li, ZHAO Zhonghai, ZHAO Handong. Geochemistry, Zircon U-Pb Dating and Tectonic Setting of the Granitoid Related with the Dayangshan Molybdenum Deposit, Daxinganling[J]. Geoscience, 2020, 34(05): 1092-1102.

Figures/Tables 10

References 59

[1]	肖荣阁, 刘敬党, 费红彩, 等. 岩石矿床地球化学 [M]. 北京: 地震出版社, 2008: 1-330.
[2]	范羽, 周涛发, 张达玉, 等. 中国钼矿床的时空分布及成矿背景分析[J]. 地质学报, 2014,88(4):784-804.
[3]	孙景贵, 张勇, 邢树文, 等. 兴蒙造山带东缘内生钼矿床的成因类型、成矿年代及成矿动力学背景[J]. 岩石学报, 2012,28(4):1317-1332.
[4]	陈衍景, 张成, 李诺, 等. 中国东北钼矿床地质[J]. 吉林大学学报(地球科学版), 2012,42(5):1223-1268.
[5]	ZORIN Y A. Geodynamics of the western part of the Mongolia-Okhotsk collisional belt, Trans-Baikal region (Russia) and Mongolia[J]. Tectonophysics, 1999,306(1):33-56. DOI URL
[6]	DONSKAYA T V, WINDLEY B F, MAZUKABZOV A M, et al. Age and evolution of late Mesozoic metamorphic core complexes in southern Siberia and northern Mongolia[J]. Journal of the Geological Society, 2008,165(1):405-421. DOI URL
[7]	NATAL’ IN B. History and modes of Mesozoic accretion in Southeastern Russia[J]. Island Arc, 1993,2(1):15-34. DOI URL
[8]	NATAL’ IN B A, AMATO J M, TORO J, et al. Paleozoic rocks of northern Chukotka Peninsula, Russian Far East: Implications for the tectonics of the Arctic region[J]. Tectonics, 1999,18(6):977-1003. DOI URL
[9]	杨元江, 庄倩, 邓昌州, 等. 黑龙江省呼中—塔河地区地球化学特征及找矿成果[J]. 物探与化探, 2017,41(1):86-91.
[10]	陈衍景, 翟明国, 蒋少涌. 华北大陆边缘造山过程与成矿研究的重要进展和问题[J]. 岩石学报, 2009,25(11):2695-2726.
[11]	XIAO W J, WINDLEY B F, HAO J, et al. Accretion leading to collision and the Permian Solonker suture, Inner Mongolia, China: Termination of the central Asian orogenic belt[J]. Tectonics, 2003,22:1069-1090.
[12]	WU F Y, SUN D Y, GE W C, etal.Geochronology of the Phanerozoic granitoids in northeastern China[J]. Journal of Asian Earth Sciences, 2011,41(1):1-30. DOI URL
[13]	XU W L, PEI F P, WANG F, et al. Spatial-temporal relationships of Mesozoic volcanic rocks in NE China: Constraints on tectonic overprinting and transformations between multiple tectonic regimes[J]. Journal of Asian Earth Sciences, 2013,74:167-193. DOI URL
[14]	葛文春, 李献华, 林强, 等. 呼伦湖早白垩世碱性流纹岩的地球化学特征及其意义[J]. 地质科学, 2001,36(2):176-183.
[15]	孟恩, 许文良, 杨德彬, 等. 满洲里地区灵泉盆地中生代火山岩的锆石U-Pb年代学、地球化学及其地质意义[J]. 岩石学报, 2011,27(4):1209-1226.
[16]	YU J J, WANG F, XU W L, et al. Early Jurassic mafic magmatism in the Lesser Xing’an-Zhangguangcai Range, NE China, and its tectonic implications: Constraints from zircon U-Pb chronology and geochemistry[J]. Lithos, 2012,142/143:256-266. DOI URL
[17]	李研, 王建, 孙德有, 等. 内蒙古海拉尔北部八大关地区花岗岩的成岩时代、地球化学特征与成因[J]. 现代地质, 2017,31(2):234-245.
[18]	徐美君, 许文良, 王枫, 等. 小兴安岭中部早侏罗世花岗质岩石的年代学与地球化学及其构造意义[J]. 岩石学报, 2013,29(2):354-368.
[19]	马玉波, 邢树文, 肖克炎, 等. 大兴安岭Cu-Mo-Ag多金属成矿带主要地质成矿特征及潜力分析[J]. 地质学报, 2016,90(7):1316-1333.
[20]	武广, 王国瑞, 刘军, 等. 大兴安岭北部主要金属矿床成矿系列和区域矿床成矿谱系[J]. 矿床地质, 2014,33(6):1127-1150.
[21]	李研, 王建, 韩志滨, 等. 大兴安岭北段八大关地区早侏罗世流纹岩锆石U-Pb定年与岩石成因[J]. 中国地质, 2017,44(2):346-357.
[22]	韩丽, 李广慧. 内蒙额尔古纳成矿带中生代火山岩浆活动与金属成矿的关系[J]. 岩石矿物学杂志, 1998,17(1):3-5.
[23]	康永建, 王亚君, 黄光杰, 等. 内蒙古八大关斑岩型铜钼矿床成岩成矿年代学研究[J]. 矿床地质, 2014,33(4):795-806.
[24]	孙立新, 任邦方, 赵凤清, 等. 额尔古纳地块太平川巨斑状花岗岩的锆石U-Pb年龄和Hf同位素特征[J]. 地学前缘, 2012,19(5):114-122.
[25]	邓昌州. 大兴安岭北部中生代斑岩铜矿: 成岩与成矿[D]. 长春:吉林大学, 2019: 1-120.
[26]	LIU Y S, HU Z C, GAO S, et al. In situ analysis of major and trace elements of anhydrous minerals by LA-ICP-MS without applying an internal standard[J]. Chemical Geology, 2008,257(1/2):34-43. DOI URL
[27]	张永明, 裴先治, 李佐臣, 等. 青海南山地区加里东期强过铝质花岗岩锆石U-Pb年龄、地球化学特征及其地质意义[J]. 地质通报, 2019,38(5):742-756.
[28]	MIDDLEMOST E A K. Naming materials in the magma/igneous rock system[J]. Earth-Science Reviews, 1994,37(3/4):215-224. DOI URL
[29]	PECCERILLO A, TAYLOR S R. Geochemistry of Eocene calc-alkaline volcanic rocks from the Kastamonu area,Northern Turkey[J]. Contributions to Mineralogy and Petrology, 1976,58:63-81. DOI URL
[30]	RICKWOOD P C. Boundary lines within petrologic diagrams which use oxides of major and minor elements[J]. Lithos, 1989,22(4):247-263. DOI URL
[31]	李锦轶, 高立明, 孙桂华, 等. 内蒙古东部双井子中三叠世同碰撞壳源花岗岩的确定及其对西伯利亚与中朝古板块碰撞时限的约束[J]. 岩石学报, 2007,23(3):565-582.
[32]	SUN S S, MCDONOUGH W F. Chemical and isotopic systema-tics of oceanic basalts: implications for mantle composition and processes[J]. Geological Society, London, Special Publications, 1989,42:313-345. DOI URL
[33]	江思宏, 张莉莉, 刘翼飞, 等. 兴蒙造山带成矿规律及若干科学问题[J]. 矿床地质, 2018,37(4):671-711.
[34]	杨帆, 肖荣阁, 李娜, 等. 内蒙古宝音图钼矿床花岗岩稀土元素地球化学特征及花岗岩成因[J]. 现代地质, 2013,27(4):831-840.
[35]	WEDEPOHL K H. The composition of the continental crust[J]. Geochimica et Cosmochimica Acta, 1995,59(7):1217-1232. DOI URL
[36]	张遵忠, 顾连兴, 吴昌志, 等. 东天山印支早期尾亚石英正长岩:成岩作用及成岩意义[J]. 岩石学报, 2006,22(5):1135-1149.
[37]	黄凡, 王登红, 王成辉, 等. 中国钼矿资源特征及其成矿规律概要[J]. 地质学报, 2014,88(12):2296-2314.
[38]	黄凡, 陈毓川, 王登红, 等. 中国钼矿主要矿集区及其资源潜力探讨[J]. 中国地质, 2011,38(5):1111-1134.
[39]	肖荣阁, 白凤军, 原振雷, 等. 东秦岭钼、金多金属矿区域成矿系统与成矿预测[J]. 现代地质, 2010,24(1):1-10.
[40]	白凤军, 肖荣阁, 刘国营. 河南嵩县钾长石石英脉型钼矿矿床成因分析[J]. 地质与勘探, 2009,45(4):335-342.
[41]	HEDENQUIST J W, RICHARDS J P. The influence of geochemical techniques on the development of genetic models for porphyry copper deposits[M] //RICHARDS J P, LARSON P B. Techniques in Hydrothermal Ore Deposits Geology. Littleton: Society of Economic Geologists, 1998: 235-256.
[42]	RICHARDS J P. Tectono-magmatic precursors for porphyry Cu-(Mo-Au) deposit formation[J]. Economic Geology, 2003,98:1515-1533. DOI URL
[43]	罗照华, 梁涛, 陈必河, 等. 板内造山作用与成矿[J]. 岩石学报, 2007,23(8):1945-1956.
[44]	李诺, 孙亚莉, 李晶, 等. 内蒙古乌努格吐山斑岩铜钼矿床辉钼矿铼锇等时线年龄及其成矿地球动力学背景[J]. 岩石学报, 2007,23(11):2881-2888.
[45]	张璟, 邵军, 周永恒, 等. 内蒙古陈巴尔虎旗八大关铜钼矿岩石地球化学特征及U-Pb、Re-Os年龄[J]. 地质通报, 2016,35(8):1388-1399.
[46]	黄世武, 张连昌, 李克庆, 等. 得尔布干成矿带太平川铜钼矿床含CH₄流体包裹体研究[J]. 岩石学报, 2010,26(5):1386-1396.
[47]	PHARAOH T C, PEARCE J A. Geochemical evidence for the geotectonic setting of early Proterozoic metavolcanic sequences in Lapland[J]. Precambrian Research, 1984,25(1/3):283-308. DOI URL
[48]	BATCHELOR R A, BOWDEN P. Petrogenetic interpretation of granitoid rock series using multicationic parameters[J]. Chemical Geology, 1985,48(1/4):43-55. DOI URL
[49]	侯增谦, 杨志明. 中国大陆环境斑岩型矿床:基本地质特征、岩浆热液系统和成矿概念模型[J]. 地质学报, 2009,83(12):1779-1817.
[50]	卢欣祥, 于在平, 冯有利, 等. 东秦岭深源浅成型花岗岩的成矿作用及地质构造背景[J]. 矿床地质, 2002,21(2):168-178.
[51]	孙海瑞, 严光生, 吕志成, 等. 东北地区钼矿的时空分布及成矿背景分析[J]. 中国矿业, 2016,25(S2):189-196,245.
[52]	唐杰. 额尔古纳地块中生代火成岩的年代学与地球化学: 对蒙古—鄂霍茨克缝合带构造演化的制约[D]. 长春:吉林大学, 2016: 1-205.
[53]	柳长峰, 赵守恒, 张浩然, 等. 内蒙古赤峰大西营子金矿区赋矿火山岩年代学与岩石地球化学特征[J]. 现代地质, 2020,34(1):27-39.
[54]	王迪, 赵国春, 苏尚国, 等. 大兴安岭南段晚中生代侵入岩时空分布及主脊与东坡岩体特征对比[J]. 现代地质, 2020,34(3):466-482.
[55]	郑建平, 牛贺才, 汤华云, 等. 鄂霍茨克洋与太平洋构造域叠合的岩浆作用与成矿响应[J]. 矿物岩石地球化学通报, 2017,36(4):545-550.
[56]	佘宏全, 李进文, 向安平, 等. 大兴安岭中北段原岩锆石U-Pb测年及其与区域构造演化关系[J]. 岩石学报, 2012,28(2):571-594.
[57]	李锦轶, 张进, 刘建峰, 等. 中国大陆主要变形系统[J]. 地学前缘, 2014,21(3):226-245.
[58]	袁建国, 顾玉超, 肖荣阁, 等. 内蒙古锡林浩特东部地区早白垩世花岗岩地球化学、锆石U-Pb年龄及地质意义[J]. 现代地质, 2017,31(1):20-32.
[59]	徐立明, 王大可, 刘玉, 等. 大兴安岭北段塔河南部早白垩世侵入岩年代学和地球化学[J]. 现代地质, 2018,32(6):1212-1226.

测点	Pb^*/ 10^-6	Th/ 10^-6	U/ 10^-6	²³⁸U/ ²³²Th	²⁰⁷Pb/²³⁵U 年龄/Ma	1σ	²⁰⁶Pb/²³⁸U 年龄/Ma	1σ	²⁰⁸Pb/²³²Th 年龄/Ma	1σ	²⁰⁷Pb/²⁰⁶Pb 比值	1σ	²⁰⁷Pb/²³⁵U 比值	1σ	²⁰⁶Pb/²³⁸U 比值	1σ
1	2.99	77.5	137	1.805 8	117.31	7.4	119.78	2.3	124.44	4.2	0.049 3	0.004 0	0.122 5	0.008 2	0.018 8	0.000 4
2	11.21	371.5	467	1.292 4	124.18	4.9	124.94	1.4	120.49	2.8	0.048 7	0.002 1	0.130 1	0.005 5	0.019 6	0.000 2
3	3.30	79.0	152	1.946 4	122.08	8.0	121.10	2.0	118.61	4.6	0.049 7	0.003 7	0.127 8	0.008 8	0.019 0	0.000 3
5	10.15	439.2	395	0.911 8	125.6 6	5.8	122.89	1.3	121.03	2.7	0.049 7	0.002 4	0.131 7	0.006 5	0.019 2	0.000 2
6	5.57	192.2	233	1.246 6	126.35	5.9	123.46	1.8	122.08	3.2	0.050 0	0.002 6	0.132 5	0.006 6	0.019 3	0.000 3
7	9.77	369.0	398	1.149 6	118.99	5.2	122.36	1.6	127.02	3.3	0.047 5	0.002 4	0.124 3	0.005 8	0.019 2	0.000 2
10	3.73	105.4	162	1.557 9	125.10	6.3	120.27	1.9	122.44	4.7	0.050 0	0.002 8	0.131 1	0.007 0	0.018 8	0.000 3
11	3.62	95.0	155	1.660 8	127.19	7.0	125.00	2.0	121.74	5.5	0.050 9	0.003 8	0.133 4	0.007 9	0.019 6	0.000 3
12	3.67	139.6	149	1.070 2	117.69	6.7	120.33	2.0	118.80	3.9	0.049 0	0.003 7	0.122 9	0.007 4	0.018 8	0.000 3
13	9.59	376.3	392	1.052 4	116.75	5.5	118.31	1.2	120.20	2.8	0.048 1	0.002 5	0.121 8	0.006 1	0.018 5	0.000 2
14	7.92	359.7	310	0.857 2	125.60	5.3	118.64	1.4	116.33	2.3	0.051 8	0.002 5	0.131 7	0.005 9	0.018 6	0.000 2
15	6.24	218.9	268	1.221 3	119.73	6.1	115.96	1.5	118.50	3.1	0.051 1	0.003 1	0.125 2	0.006 8	0.018 2	0.000 2
16	6.74	164.7	304	1.828 1	125.59	6.1	119.51	1.5	118.90	3.7	0.051 0	0.002 8	0.131 7	0.006 8	0.018 7	0.000 2
18	5.22	147.6	234	1.606 8	113.86	7.2	117.37	1.8	128.46	4.9	0.048 0	0.003 6	0.118 7	0.007 9	0.018 4	0.000 3
19	37.5	1 409.4	1 592	1.215 9	114.41	3.5	116.42	1.2	120.79	2.5	0.047 0	0.001 5	0.119 3	0.003 9	0.018 2	0.000 2
21	2.82	79.7	123	1.554 2	121.36	7.7	121.71	2.1	118.63	5.0	0.050 2	0.004 1	0.127 0	0.008 6	0.019 1	0.000 3
22	3.00	73.0	140	1.942 5	115.78	7.8	117.24	1.9	117.01	4.4	0.047 6	0.003 7	0.120 8	0.008 6	0.018 4	0.000 3
23	5.50	170.5	230	1.379 6	124.50	6.0	121.17	1.6	130.68	3.6	0.050 1	0.002 8	0.130 4	0.006 7	0.019 0	0.000 2
24	3.18	73.1	147	2.040 3	121.25	7.2	118.48	2.0	122.04	4.9	0.050 7	0.003 6	0.126 8	0.007 9	0.018 5	0.000 3
25	7.85	232.9	354	1.538 0	116.29	5.1	117.30	1.5	113.81	2.9	0.048 5	0.002 4	0.121 3	0.005 7	0.018 4	0.000 2
26	8.48	342.2	347	1.057 5	117.71	5.7	118.96	1.4	118.81	3.0	0.048 6	0.002 7	0.122 9	0.006 3	0.018 6	0.000 2
27	4.99	158.1	218	1.402 3	115.85	6.3	117.93	1.7	120.78	3.2	0.047 7	0.002 9	0.120 9	0.007 0	0.018 5	0.000 3
28	3.96	111.5	171	1.548 4	124.25	7.5	122.15	1.8	124.61	4.2	0.049 2	0.003 3	0.130 2	0.008 3	0.019 1	0.000 3
29	6.62	207.3	282	1.450 0	122.12	6.1	124.43	1.9	128.11	4.2	0.049 2	0.002 9	0.127 8	0.006 8	0.019 5	0.000 3
30	4.53	158.1	188	1.238 3	121.10	6.9	120.34	1.9	124.47	3.6	0.048 8	0.003 1	0.126 7	0.007 7	0.018 8	0.000 3
31	5.03	133.3	226	1.752 6	120.90	6.5	119.25	1.7	116.38	3.3	0.049 2	0.002 9	0.126 4	0.007 3	0.018 7	0.000 3
32	3.55	124.7	153	1.246 0	121.21	6.3	117.63	1.8	108.19	3.6	0.050 2	0.003 1	0.126 8	0.007 0	0.018 4	0.000 3
33	4.85	202.2	196	0.999 2	121.26	6.3	118.99	1.9	117.88	3.2	0.049 7	0.002 9	0.126 8	0.007 0	0.018 6	0.000 3
34	2.78	66.4	128	1.951 1	118.50	8.6	117.34	2.0	117.66	4.7	0.050 0	0.004 3	0.123 8	0.009 5	0.018 4	0.000 3
35	5.09	179.9	217	1.228 1	117.32	7.3	120.00	2.1	116.64	4.0	0.047 6	0.003 3	0.122 5	0.008 1	0.018 8	0.000 3
37	4.53	133.9	199	1.505 3	121.16	6.6	120.59	1.6	112.72	3.5	0.049 7	0.003 2	0.126 7	0.007 4	0.018 9	0.000 3
38	6.01	249.4	246	1.013 2	129.38	6.2	119.07	1.6	114.40	2.9	0.053 1	0.002 9	0.135 9	0.007 0	0.018 6	0.000 2
39	3.90	131.1	166	1.345 1	120.70	6.2	120.65	1.8	117.22	4.1	0.049 0	0.003 0	0.126 2	0.006 8	0.018 9	0.000 3

测点	Pb^*/ 10^-6	Th/ 10^-6	U/ 10^-6	²³⁸U/ ²³²Th	²⁰⁷Pb/²³⁵U 年龄/Ma	1σ	²⁰⁶Pb/²³⁸U 年龄/Ma	1σ	²⁰⁸Pb/²³²Th 年龄/Ma	1σ	²⁰⁷Pb/²⁰⁶Pb 比值	1σ	²⁰⁷Pb/²³⁵U 比值	1σ	²⁰⁶Pb/²³⁸U 比值	1σ
1	2.99	77.5	137	1.805 8	117.31	7.4	119.78	2.3	124.44	4.2	0.049 3	0.004 0	0.122 5	0.008 2	0.018 8	0.000 4
2	11.21	371.5	467	1.292 4	124.18	4.9	124.94	1.4	120.49	2.8	0.048 7	0.002 1	0.130 1	0.005 5	0.019 6	0.000 2
3	3.30	79.0	152	1.946 4	122.08	8.0	121.10	2.0	118.61	4.6	0.049 7	0.003 7	0.127 8	0.008 8	0.019 0	0.000 3
5	10.15	439.2	395	0.911 8	125.6 6	5.8	122.89	1.3	121.03	2.7	0.049 7	0.002 4	0.131 7	0.006 5	0.019 2	0.000 2
6	5.57	192.2	233	1.246 6	126.35	5.9	123.46	1.8	122.08	3.2	0.050 0	0.002 6	0.132 5	0.006 6	0.019 3	0.000 3
7	9.77	369.0	398	1.149 6	118.99	5.2	122.36	1.6	127.02	3.3	0.047 5	0.002 4	0.124 3	0.005 8	0.019 2	0.000 2
10	3.73	105.4	162	1.557 9	125.10	6.3	120.27	1.9	122.44	4.7	0.050 0	0.002 8	0.131 1	0.007 0	0.018 8	0.000 3
11	3.62	95.0	155	1.660 8	127.19	7.0	125.00	2.0	121.74	5.5	0.050 9	0.003 8	0.133 4	0.007 9	0.019 6	0.000 3
12	3.67	139.6	149	1.070 2	117.69	6.7	120.33	2.0	118.80	3.9	0.049 0	0.003 7	0.122 9	0.007 4	0.018 8	0.000 3
13	9.59	376.3	392	1.052 4	116.75	5.5	118.31	1.2	120.20	2.8	0.048 1	0.002 5	0.121 8	0.006 1	0.018 5	0.000 2
14	7.92	359.7	310	0.857 2	125.60	5.3	118.64	1.4	116.33	2.3	0.051 8	0.002 5	0.131 7	0.005 9	0.018 6	0.000 2
15	6.24	218.9	268	1.221 3	119.73	6.1	115.96	1.5	118.50	3.1	0.051 1	0.003 1	0.125 2	0.006 8	0.018 2	0.000 2
16	6.74	164.7	304	1.828 1	125.59	6.1	119.51	1.5	118.90	3.7	0.051 0	0.002 8	0.131 7	0.006 8	0.018 7	0.000 2
18	5.22	147.6	234	1.606 8	113.86	7.2	117.37	1.8	128.46	4.9	0.048 0	0.003 6	0.118 7	0.007 9	0.018 4	0.000 3
19	37.5	1 409.4	1 592	1.215 9	114.41	3.5	116.42	1.2	120.79	2.5	0.047 0	0.001 5	0.119 3	0.003 9	0.018 2	0.000 2
21	2.82	79.7	123	1.554 2	121.36	7.7	121.71	2.1	118.63	5.0	0.050 2	0.004 1	0.127 0	0.008 6	0.019 1	0.000 3
22	3.00	73.0	140	1.942 5	115.78	7.8	117.24	1.9	117.01	4.4	0.047 6	0.003 7	0.120 8	0.008 6	0.018 4	0.000 3
23	5.50	170.5	230	1.379 6	124.50	6.0	121.17	1.6	130.68	3.6	0.050 1	0.002 8	0.130 4	0.006 7	0.019 0	0.000 2
24	3.18	73.1	147	2.040 3	121.25	7.2	118.48	2.0	122.04	4.9	0.050 7	0.003 6	0.126 8	0.007 9	0.018 5	0.000 3
25	7.85	232.9	354	1.538 0	116.29	5.1	117.30	1.5	113.81	2.9	0.048 5	0.002 4	0.121 3	0.005 7	0.018 4	0.000 2
26	8.48	342.2	347	1.057 5	117.71	5.7	118.96	1.4	118.81	3.0	0.048 6	0.002 7	0.122 9	0.006 3	0.018 6	0.000 2
27	4.99	158.1	218	1.402 3	115.85	6.3	117.93	1.7	120.78	3.2	0.047 7	0.002 9	0.120 9	0.007 0	0.018 5	0.000 3
28	3.96	111.5	171	1.548 4	124.25	7.5	122.15	1.8	124.61	4.2	0.049 2	0.003 3	0.130 2	0.008 3	0.019 1	0.000 3
29	6.62	207.3	282	1.450 0	122.12	6.1	124.43	1.9	128.11	4.2	0.049 2	0.002 9	0.127 8	0.006 8	0.019 5	0.000 3
30	4.53	158.1	188	1.238 3	121.10	6.9	120.34	1.9	124.47	3.6	0.048 8	0.003 1	0.126 7	0.007 7	0.018 8	0.000 3
31	5.03	133.3	226	1.752 6	120.90	6.5	119.25	1.7	116.38	3.3	0.049 2	0.002 9	0.126 4	0.007 3	0.018 7	0.000 3
32	3.55	124.7	153	1.246 0	121.21	6.3	117.63	1.8	108.19	3.6	0.050 2	0.003 1	0.126 8	0.007 0	0.018 4	0.000 3
33	4.85	202.2	196	0.999 2	121.26	6.3	118.99	1.9	117.88	3.2	0.049 7	0.002 9	0.126 8	0.007 0	0.018 6	0.000 3
34	2.78	66.4	128	1.951 1	118.50	8.6	117.34	2.0	117.66	4.7	0.050 0	0.004 3	0.123 8	0.009 5	0.018 4	0.000 3
35	5.09	179.9	217	1.228 1	117.32	7.3	120.00	2.1	116.64	4.0	0.047 6	0.003 3	0.122 5	0.008 1	0.018 8	0.000 3
37	4.53	133.9	199	1.505 3	121.16	6.6	120.59	1.6	112.72	3.5	0.049 7	0.003 2	0.126 7	0.007 4	0.018 9	0.000 3
38	6.01	249.4	246	1.013 2	129.38	6.2	119.07	1.6	114.40	2.9	0.053 1	0.002 9	0.135 9	0.007 0	0.018 6	0.000 2
39	3.90	131.1	166	1.345 1	120.70	6.2	120.65	1.8	117.22	4.1	0.049 0	0.003 0	0.126 2	0.006 8	0.018 9	0.000 3

样号	SiO₂	TiO₂		Al₂O₃		TFe₂O₃		FeO		MnO	MgO		CaO		Na₂O		K₂O	P₂O₅	烧失量		总和		A/CNK	A/NK
ZK1003-4	68.19	0.37		15.31		2.64		1.08		0.07	0.56		1.15		4.75		5.56	0.10	1.14		99.84		0.961	1.107
ZK1003-5	67.97	0.36		15.17		2.68		1.10		0.07	0.56		1.30		4.53		5.50	0.10	1.48		99.72		0.962	1.132
ZK1002-6	68.32	0.39		15.21		2.72		1.08		0.08	0.57		1.44		4.65		5.41	0.11	1.28		100.18		0.943	1.126
ZK1002-7	68.62	0.37		15.04		2.70		1.10		0.07	0.57		1.17		4.61		5.31	0.10	1.35		99.91		0.973	1.128
样号	Cs	Rb		Sr		Ba		Ga		Nb	Ta		Zr		Hf		Th	V	Cr		Co		Ni	Li
ZK1003-4	2.32	189		273		590		18.8		16.9	1.29		368		9.58		23.3	18.5	0.79		2.50		0.68	26.9
ZK1003-5	2.79	193		243		559		18.2		16.2	1.23		359		9.19		22.2	18.7	1.11		2.54		0.83	25.1
ZK1002-6	2.45	178		259		548		18.1		16.5	1.26		355		9.21		22.6	17.3	0.78		2.46		0.71	21.3
ZK1002-7	2.71	178		220		533		17.6		16.0	1.29		349		9.09		23.0	17.6	0.76		2.56		0.66	21.7
样号	Sc	U		La		Ce		Pr		Nd	Sm		Eu		Gd		Tb	Dy	Ho		Er		Tm	Yb
ZK1003-4	3.87	5.19		44.5		86.5		9.66		33.4	6.03		0.88		4.83		0.70	4.27	0.83		2.63		0.39	2.70
ZK1003-5	4.36	5.27		41.2		80.8		8.91		31.0	5.61		0.77		4.35		0.65	4.03	0.80		2.46		0.39	2.58
ZK1002-6	3.82	5.40		42.3		84.2		9.49		33.3	5.76		0.84		4.72		0.70	4.12	0.83		2.49		0.39	2.73
ZK1002-7	4.16	5.25		41.9		84.5		9.32		32.4	5.71		0.81		4.58		0.69	3.91	0.80		2.48		0.40	2.80
样号	Lu		Y		ΣREE		δEu		(La/Yb)_N			(La/Sm)_N		Nb/Ta		Nd/Th		Ti/Y		Ti/Zr		Mg^#
ZK1003-4	0.42		25.9		197.74		0.483		11.11			4.64		13.10		1.43		85.64		6.03		0.27
ZK1003-5	0.41		25.0		183.96		0.460		10.77			4.62		13.17		1.40		86.33		6.01		0.27
ZK1002-6	0.39		25.0		192.26		0.479		10.45			4.62		13.10		1.47		93.52		6.59		0.27
ZK1002-7	0.43		24.9		190.73		0.469		10.09			4.62		12.40		1.41		89.08		6.36		0.27

样号	SiO₂	TiO₂		Al₂O₃		TFe₂O₃		FeO		MnO	MgO		CaO		Na₂O		K₂O	P₂O₅	烧失量		总和		A/CNK	A/NK
ZK1003-4	68.19	0.37		15.31		2.64		1.08		0.07	0.56		1.15		4.75		5.56	0.10	1.14		99.84		0.961	1.107
ZK1003-5	67.97	0.36		15.17		2.68		1.10		0.07	0.56		1.30		4.53		5.50	0.10	1.48		99.72		0.962	1.132
ZK1002-6	68.32	0.39		15.21		2.72		1.08		0.08	0.57		1.44		4.65		5.41	0.11	1.28		100.18		0.943	1.126
ZK1002-7	68.62	0.37		15.04		2.70		1.10		0.07	0.57		1.17		4.61		5.31	0.10	1.35		99.91		0.973	1.128
样号	Cs	Rb		Sr		Ba		Ga		Nb	Ta		Zr		Hf		Th	V	Cr		Co		Ni	Li
ZK1003-4	2.32	189		273		590		18.8		16.9	1.29		368		9.58		23.3	18.5	0.79		2.50		0.68	26.9
ZK1003-5	2.79	193		243		559		18.2		16.2	1.23		359		9.19		22.2	18.7	1.11		2.54		0.83	25.1
ZK1002-6	2.45	178		259		548		18.1		16.5	1.26		355		9.21		22.6	17.3	0.78		2.46		0.71	21.3
ZK1002-7	2.71	178		220		533		17.6		16.0	1.29		349		9.09		23.0	17.6	0.76		2.56		0.66	21.7
样号	Sc	U		La		Ce		Pr		Nd	Sm		Eu		Gd		Tb	Dy	Ho		Er		Tm	Yb
ZK1003-4	3.87	5.19		44.5		86.5		9.66		33.4	6.03		0.88		4.83		0.70	4.27	0.83		2.63		0.39	2.70
ZK1003-5	4.36	5.27		41.2		80.8		8.91		31.0	5.61		0.77		4.35		0.65	4.03	0.80		2.46		0.39	2.58
ZK1002-6	3.82	5.40		42.3		84.2		9.49		33.3	5.76		0.84		4.72		0.70	4.12	0.83		2.49		0.39	2.73
ZK1002-7	4.16	5.25		41.9		84.5		9.32		32.4	5.71		0.81		4.58		0.69	3.91	0.80		2.48		0.40	2.80
样号	Lu		Y		ΣREE		δEu		(La/Yb)_N			(La/Sm)_N		Nb/Ta		Nd/Th		Ti/Y		Ti/Zr		Mg^#
ZK1003-4	0.42		25.9		197.74		0.483		11.11			4.64		13.10		1.43		85.64		6.03		0.27
ZK1003-5	0.41		25.0		183.96		0.460		10.77			4.62		13.17		1.40		86.33		6.01		0.27
ZK1002-6	0.39		25.0		192.26		0.479		10.45			4.62		13.10		1.47		93.52		6.59		0.27
ZK1002-7	0.43		24.9		190.73		0.469		10.09			4.62		12.40		1.41		89.08		6.36		0.27