地学前缘 ›› 2020, Vol. 27 ›› Issue (5): 99-115.DOI: 10.13745/j.esf.sf.2020.5.37
李成禄1(), 李胜荣2, 袁茂文2, 杜兵盈3, 李文龙1, Masroor ALAM4, 刘东园2, 刘浩2
收稿日期:
2020-03-05
修回日期:
2020-04-21
出版日期:
2020-09-25
发布日期:
2020-09-25
作者简介:
李成禄(1984—),男,博士,高级工程师,主要从事矿产勘查及综合研究工作。E-mail: lcl230881@163.com
基金资助:
LI Chenglu1(), LI Shengrong2, YUAN Maowen2, DU Bingying3, LI Wenlong1, Masroor ALAM4, LIU Dongyuan2, LIU Hao2
Received:
2020-03-05
Revised:
2020-04-21
Online:
2020-09-25
Published:
2020-09-25
摘要:
科洛金矿床位于黑龙江省嫩江—黑河构造混杂岩带中,为一正在勘查的中型金矿床。前人研究认为该矿床为一中温、富水、低盐度的韧性剪切带型金矿床。但随着勘查工作的持续开展,新发现了大量含多金属硫化物的石英脉型矿石。为进一步明确该矿床成因,对科洛金矿床内韧性变形和浸染状-团块状两种不同产状黄铁矿进行了系统的成分标型及稳定同位素特征研究。结果表明:韧性变形黄铁矿较浸染-团块状黄铁矿的S/Fe值低,Au、Ag、Co含量高,As含量低,总体显示韧性变形黄铁矿相对贫硫;黄铁矿微量元素显示两类黄铁矿REE具有相似的地球化学特征,整体呈轻稀土富集、重稀土亏损的“右倾”式稀土配分模式。稀土元素总量为17.00×10-6~66.95×10-6,韧性变形黄铁矿含量明显偏低,LREE/HREE值为5.25~12.50,相对较稳定。Y/Ho值与地幔和地壳重合范围较多,Zr/Hf值、Nb/Ta值变化范围较大,显示成矿环境不稳定;黄铁矿3He含量为2.405×10-13~10.811×10-13,4He含量为3.35×10-7~4.99×10-7,3He-4He图和R/Ra-40Ar/36Ar图显示成矿流体有以地幔为主的壳幔混源特征,成矿过程应有大气降水的参与;黄铁矿δ34S变化范围小,集中在+2.3‰~+7.6‰(韧性变形黄铁矿δ34S平均值偏低),稍正向偏离陨石硫特征;黄铁矿的206Pb/204Pb=18.157~18.211;207Pb/204Pb=15.542~15.594;208Pb/204Pb=38.032~38.218(韧性变形黄铁矿的206Pb/204Pb、207Pb/204Pb、208Pb/204Pb平均值偏低),均显示与造山作用关系密切。利用黄铁矿化学成分特征元素Co/Ni值及Co-Ni成因判别图解认为科洛金矿有热液成因矿床特征;利用w(Fe+S)-w(As)图解和Co-Ni-As含量图解显示石英脉型矿石反映浅成低温热液型金矿特征。综合区域变质变形事件、典型矿床特征及矿区内已取得的年龄、流体包裹体等相关数据认为,科洛金矿床应存在两期矿化:三叠纪形成的韧性剪切带型金矿床和白垩纪形成的浅成低温热液型金矿床。建议在今后的矿产勘查中注意寻找真正的韧性剪切带型金矿。
中图分类号:
李成禄, 李胜荣, 袁茂文, 杜兵盈, 李文龙, Masroor ALAM, 刘东园, 刘浩. 黑龙江省嫩江—黑河构造混杂岩带科洛金矿床成因:来自黄铁矿化学成分及He-Ar、S、Pb同位素证据[J]. 地学前缘, 2020, 27(5): 99-115.
LI Chenglu, LI Shengrong, YUAN Maowen, DU Bingying, LI Wenlong, Masroor ALAM, LIU Dongyuan, LIU Hao. Genesis of the Keluo Au deposit in the Nenjiang-Heihe tectonic melange belt, Heilongjiang Province: evidence from chemical composition and pyrite He-Ar, S, Pb isotopes[J]. Earth Science Frontiers, 2020, 27(5): 99-115.
图1 中国东北地区构造地质简图(a)及研究区区域地质简图(b)(底图据文献[1,10]) 1—中新生代沉积物;2—新生代火山岩;3—中生代火山沉积岩;4—上古生界;5—下古生界;6—构造片岩-片麻岩;7—花岗岩;8—花岗闪长岩;9—闪长岩;10—断层;11—拆离断层;12—糜棱岩化及混合岩化带;13—嫩江—黑河构造混杂岩带范围;14—典型矿床;15—地市县;16—研究区范围。
Fig.1 Regional tectonic units of Northeast China (a) and geological sketch map of the study area (b). Adapted from [1,10].
矿床 名称 | 矿区中心经、纬度 | 资源量/t | 矿床平均品位/ (g·t-1) | 赋矿围岩 | 主要围岩蚀变 | 矿石类型 | 形成时代/ Ma | 矿床成因 类型 | 文献来源 |
---|---|---|---|---|---|---|---|---|---|
三道湾 子金矿 | 127°00'00″E,50°21'55″N | 大于25 | 大于15 | 白垩系龙江组粗面安山岩、玄武粗安岩 | 硅化、绢云母化、黏土化、青磐岩化等 | 石英脉 | 119.1 | 低温热液型 | [ |
永新 金矿 | 125°56'55″E,49°41'38″N | 大于20 | 3.5 | 石炭纪花岗岩与糜棱岩接触带 | 硅化、钾化、绢云母化、绿泥石化等 | 热液蚀变 角砾岩 | 114.6 | 低温热液型 | [ |
二道坎 银矿 | 125°48'51″E,50°04'52″N | 大于1 500 (Ag) | 557.6(Ag) | 上志留统—中泥盆统泥鳅河组凝灰质砂岩、泥岩 | 硅化、绢云母化、绿泥石化 | 石英脉胶结 角砾岩 | 232.9 | 低温热液型 | [ |
大新屯 金矿 | 127°07'33″E,50°53'14″N | 大于5 | 3.4 | 新元古界—下寒武统北宽河组二云片岩 | 硅化、绢云母化、绿泥石化、碳酸盐化 | 糜棱片岩 | 152.8 | 韧性剪切带型 | [ |
上马场 金矿 | 127°16'15″E,50°22'15″N | 大于11 | 4.2 | 白垩系龙江组安山岩、粗面安山岩 | 硅化、绿泥石化、绿帘石化、碳酸盐化 | 蚀变岩 | 113.6 | 低温热液型 | [ |
孟德河 金矿 | 126°13'13″E,49°54'13″N | 大于11 | 1.8 | 新元古界—下寒武统北宽河组二云片岩 | 硅化、绢(白)云母化、绿泥石化、碳酸盐化 | 糜棱片岩 | 209.6 | 韧性剪切带型 | [ |
三合屯 金矿 | 125°33'30″E,49°21'34″N | 大于5 | 大于2.7 | 白垩系嫩江组、光华组地层与糜棱岩接触带 | 硅化、钾化、绢云母化、绿泥石化等 | 热液蚀变 角砾岩 | 早白垩世 | 低温热液型 | [ |
表1 嫩江—黑河构造混杂岩带典型矿床基本信息简表
Table 1 Basic information on the typical ore deposits in the Nenjiang-Heihe tectonic melange zone
矿床 名称 | 矿区中心经、纬度 | 资源量/t | 矿床平均品位/ (g·t-1) | 赋矿围岩 | 主要围岩蚀变 | 矿石类型 | 形成时代/ Ma | 矿床成因 类型 | 文献来源 |
---|---|---|---|---|---|---|---|---|---|
三道湾 子金矿 | 127°00'00″E,50°21'55″N | 大于25 | 大于15 | 白垩系龙江组粗面安山岩、玄武粗安岩 | 硅化、绢云母化、黏土化、青磐岩化等 | 石英脉 | 119.1 | 低温热液型 | [ |
永新 金矿 | 125°56'55″E,49°41'38″N | 大于20 | 3.5 | 石炭纪花岗岩与糜棱岩接触带 | 硅化、钾化、绢云母化、绿泥石化等 | 热液蚀变 角砾岩 | 114.6 | 低温热液型 | [ |
二道坎 银矿 | 125°48'51″E,50°04'52″N | 大于1 500 (Ag) | 557.6(Ag) | 上志留统—中泥盆统泥鳅河组凝灰质砂岩、泥岩 | 硅化、绢云母化、绿泥石化 | 石英脉胶结 角砾岩 | 232.9 | 低温热液型 | [ |
大新屯 金矿 | 127°07'33″E,50°53'14″N | 大于5 | 3.4 | 新元古界—下寒武统北宽河组二云片岩 | 硅化、绢云母化、绿泥石化、碳酸盐化 | 糜棱片岩 | 152.8 | 韧性剪切带型 | [ |
上马场 金矿 | 127°16'15″E,50°22'15″N | 大于11 | 4.2 | 白垩系龙江组安山岩、粗面安山岩 | 硅化、绿泥石化、绿帘石化、碳酸盐化 | 蚀变岩 | 113.6 | 低温热液型 | [ |
孟德河 金矿 | 126°13'13″E,49°54'13″N | 大于11 | 1.8 | 新元古界—下寒武统北宽河组二云片岩 | 硅化、绢(白)云母化、绿泥石化、碳酸盐化 | 糜棱片岩 | 209.6 | 韧性剪切带型 | [ |
三合屯 金矿 | 125°33'30″E,49°21'34″N | 大于5 | 大于2.7 | 白垩系嫩江组、光华组地层与糜棱岩接触带 | 硅化、钾化、绢云母化、绿泥石化等 | 热液蚀变 角砾岩 | 早白垩世 | 低温热液型 | [ |
图2 科洛金矿床矿区地质简图(底图据文献[47]) 1—第四系;2—白垩系甘河组火山岩;3—古元古界新开岭群;4—白垩纪闪长岩;5—泥盆纪碎裂花岗岩;6—泥盆纪糜棱岩;7—闪长玢岩脉;8—石英脉;9—金矿体;10—实测断层/推测断层;11—勘探线;12—钻孔位置及编号/采样对应钻孔。
Fig.2 Geological sketch map of the Keluo gold deposit. Adapted from [47].
图3 科洛金矿床沿21号勘探线横剖面示意图(底图据文献[47]) 1—第四系;2—泥盆纪糜棱岩;3—白垩纪闪长岩;4—闪长玢岩脉;5—破碎带;6—金矿体(金品位大于1 g/t);7—金矿化体(金品位大于0.3 g/t);8—钻孔位置及钻孔号;9—采样位置。
Fig.3 Geological section along No. 21 exploration line in the Keluo gold deposit. Adapted from [47].
图4 科洛金矿床典型矿石标本及显微图像 a—糜棱片岩型矿石,黄铁矿顺层产出;b—糜棱片岩型矿石叠加强烈绢云母化,使矿石整体变为青绿色;c—糜棱片岩型矿石叠加后期的硅化;d—糜棱片岩矿石被后期石英细脉穿插;e—后期穿插的石英脉两侧沉淀大量的黄铁矿;f—后期穿插的石英脉两侧沉淀大量的方铅矿和闪锌矿;g—糜棱片岩型矿石显微照片可见黄铁矿与白云母定向排列,显示同期生成;h—石英脉型矿石中黄铁矿呈规则形态;i—黄铁矿沿裂隙灌入,后期碳酸盐化叠加明显。矿物缩写:Py—黄铁矿;Gn—方铅矿;Sp—闪锌矿;Qtz—石英;Ser—绢云母;Ms—白云母;Cb—碳酸盐。
Fig.4 Photo (a-f) and photomicrograph (g-i) of typical ore samples from the Keluo gold deposit
图5 科洛金矿床典型矿石结构及共生矿物组合显微照片 a—糜棱片岩型矿石中黄铁矿呈撕裂状等不规则形态;b—早期石英脉中黄铁矿呈立方体浸染状分布;c—早期形成的黄铁矿颗粒相对较大,晚期黄铁矿沿裂隙灌入呈脉状;d—规则形态黄铁矿内部包裹闪锌矿和黄铜矿的固溶体;e—规则形态黄铁矿裂隙中发育黄铜矿;f—团块状黄铁矿内部发育包体金;g—黄铁矿与闪锌矿颗粒间的粒间金及闪锌矿中的包体金;h—闪锌矿交代黄铁矿,其内部发育方铅矿包裹体和黄铜矿固溶体;i—闪锌矿与方铅矿连生,并交代黄铁矿。矿物缩写:Py—黄铁矿;Sp—闪锌矿;Cp—黄铜矿;Gn—方铅矿;Au—金;Qtz—石英。
Fig.5 Photomicrographs ore samples showing typical ore structures and symbiotic mineral assemblages in the Keluo gold deposit
序号 | 样品号 | wB/% | S/Fe | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
S | Fe | Au | Ag | Co | Ni | As | Sb | Se | Te | Bi | Cd | Ge | Zn | Pb | Cu | Total | |||
1 | Zk21B06-51 | 52.33 | 46.32 | — | 0.03 | 0.05 | — | 0.10 | — | — | 0.04 | — | — | — | 0.00 | — | — | 98.87 | 1.97 |
2 | Zk21B06-11 | 53.34 | 46.42 | 0.06 | 0.04 | 0.06 | — | 0.03 | 0.00 | — | — | — | — | — | — | — | 0.01 | 99.95 | 2.00 |
3 | Zk2105-11 | 52.96 | 46.37 | 0.05 | — | 0.09 | — | 0.04 | 0.00 | — | — | — | 0.02 | — | — | — | 0.03 | 99.56 | 1.99 |
4 | Zk2105-191 | 52.78 | 46.40 | — | — | 0.05 | — | 0.07 | — | 0.01 | 0.03 | — | — | — | — | — | — | 99.35 | 1.98 |
5 | Zk2105-71 | 53.41 | 46.46 | 0.03 | — | 0.09 | — | 0.04 | 0.05 | — | 0.03 | — | — | — | — | 0.02 | 0.01 | 100.13 | 2.00 |
6 | Zk2105-151 | 53.00 | 46.06 | 0.03 | 0.00 | 0.12 | — | 0.04 | — | — | 0.01 | — | 0.01 | — | — | — | 0.02 | 99.29 | 2.00 |
7 | Zk2104-261 | 53.04 | 46.35 | — | — | 0.18 | — | 0.01 | — | — | 0.01 | — | — | — | 0.01 | — | 0.01 | 99.61 | 1.99 |
8 | Zk1904-11 | 53.27 | 46.73 | 0.01 | 0.03 | 0.04 | — | — | 0.01 | — | 0.01 | — | 0.01 | — | — | — | 0.00 | 100.11 | 1.99 |
9 | Zk0302-61 | 53.24 | 46.66 | 0.01 | — | 0.11 | — | 0.07 | — | 0.03 | 0.00 | — | 0.03 | — | — | — | — | 100.15 | 1.99 |
10 | Zk2104-1-71 | 53.40 | 46.46 | 0.01 | — | 0.08 | — | — | 0.01 | — | 0.03 | — | — | — | — | 0.08 | 0.01 | 100.08 | 2.00 |
11 | Zk2104-151 | 53.31 | 46.64 | — | — | 0.06 | — | — | 0.01 | 0.01 | — | — | — | — | — | — | 0.01 | 100.03 | 1.99 |
12 | Zk0704-81 | 53.59 | 46.85 | 0.00 | 0.02 | 0.19 | — | 0.06 | — | — | — | — | — | — | 0.04 | — | — | 100.75 | 1.99 |
13 | Zk2104-351 | 53.34 | 46.38 | — | 0.07 | 0.19 | — | 0.04 | 0.03 | — | 0.03 | — | — | — | 0.01 | — | 0.03 | 100.10 | 2.00 |
14 | Zk0302-51 | 53.12 | 46.37 | — | 0.04 | 0.05 | — | 0.08 | — | — | — | — | — | — | — | — | 0.05 | 99.70 | 2.00 |
15 | Zk1706-11 | 53.45 | 46.56 | 0.05 | — | 0.10 | — | 0.08 | 0.01 | 0.01 | — | — | 0.03 | — | — | — | — | 100.30 | 2.00 |
16 | Zk19B06-31 | 53.01 | 46.14 | 0.03 | — | 0.05 | — | 0.04 | 0.05 | 0.01 | 0.01 | — | 0.03 | — | — | — | 0.04 | 99.40 | 2.00 |
17 | Zk2105-51 | 53.38 | 46.31 | 0.03 | — | 0.06 | 0.07 | 0.09 | 0.00 | — | 0.01 | — | 0.01 | — | 0.09 | — | 0.03 | 100.07 | 2.01 |
18 | Zk2105-221 | 53.82 | 46.17 | — | 0.02 | 0.09 | — | 0.02 | — | — | — | — | 0.02 | — | — | — | 0.03 | 100.17 | 2.03 |
19 | Zk1908-21 | 53.49 | 46.53 | — | — | 0.10 | — | 0.02 | 0.00 | 0.02 | — | — | 0.02 | — | 0.05 | — | 0.05 | 100.28 | 2.00 |
20 | Zk1908-51 | 53.33 | 46.38 | 0.02 | 0.00 | 0.08 | — | 0.20 | — | — | 0.01 | — | 0.01 | — | — | 0.02 | — | 100.05 | 2.00 |
21 | Zk2104-3191 | 53.08 | 45.94 | — | 0.00 | 0.07 | — | 0.04 | 0.00 | 0.01 | 0.03 | — | 0.02 | — | — | — | 0.05 | 99.23 | 2.01 |
22 | Zk0704-51 | 53.45 | 46.21 | 0.01 | 0.00 | 0.07 | — | 0.04 | — | — | — | — | 0.02 | — | — | — | — | 99.79 | 2.02 |
23 | Zk0302-81 | 53.40 | 46.40 | 0.02 | — | 0.05 | — | 0.02 | 0.01 | — | — | — | 0.02 | — | 0.08 | — | 0.01 | 100.01 | 2.00 |
24 | Zk2104-3171 | 52.93 | 45.99 | — | 0.02 | 0.04 | — | 0.09 | — | 0.05 | — | — | 0.02 | — | — | — | — | 99.15 | 2.00 |
25 | Zk170621 | 53.50 | 46.48 | 0.01 | 0.01 | 0.10 | — | 0.10 | — | — | 0.00 | — | — | — | — | — | 0.04 | 100.24 | 2.00 |
26 | Zk2104-2151 | 53.40 | 46.39 | 0.05 | — | 0.09 | — | 0.04 | — | — | — | — | 0.00 | — | — | — | — | 99.97 | 2.01 |
27 | Zk2702-31 | 53.04 | 46.06 | 0.02 | — | 0.07 | — | 0.00 | — | 0.02 | — | — | 0.02 | — | — | — | — | 99.23 | 2.01 |
28 | Zk2105-261 | 53.17 | 46.16 | 0.01 | 0.02 | 0.09 | — | — | 0.02 | — | — | — | — | — | — | — | 0.02 | 99.49 | 2.01 |
29 | Zk2105-21 | 53.37 | 46.34 | — | — | 0.06 | — | 0.05 | 0.03 | 0.01 | — | — | 0.02 | — | — | — | — | 99.87 | 2.01 |
30 | Zk2104-3121 | 53.01 | 46.00 | — | — | 0.06 | — | — | — | 0.04 | 0.04 | — | — | 0.01 | 0.01 | — | 0.01 | 99.18 | 2.01 |
31 | Zk1706-31 | 53.39 | 46.31 | 0.01 | — | 0.07 | — | 0.01 | — | — | — | — | 0.02 | — | 0.02 | — | 0.01 | 99.82 | 2.01 |
32 | Zk19B06-61 | 53.30 | 46.22 | 0.02 | 0.02 | 0.07 | — | 0.02 | — | — | — | — | 0.00 | — | 0.03 | — | — | 99.67 | 2.01 |
33 | Zk2105-231 | 53.33 | 46.21 | — | — | 0.07 | — | — | 0.04 | — | — | — | 0.03 | — | 0.03 | 0.03 | — | 99.73 | 2.01 |
34 | Zk21B06-21 | 52.92 | 45.82 | 0.02 | 0.02 | 0.20 | — | 0.04 | 0.06 | — | — | — | — | — | 0.02 | — | 0.02 | 99.08 | 2.01 |
35 | Zk0704-41 | 53.32 | 46.05 | — | — | 0.05 | — | 0.02 | 0.01 | 0.01 | 0.01 | — | 0.01 | — | — | — | — | 99.48 | 2.02 |
36 | Zk2702-61 | 53.25 | 46.04 | 0.01 | 0.01 | 0.07 | — | 0.05 | — | — | 0.01 | — | — | 0.01 | — | 0.04 | 0.00 | 99.47 | 2.02 |
37 | Zk1904-31 | 53.56 | 46.11 | — | 0.01 | 0.09 | — | 0.04 | — | 0.02 | 0.01 | — | 0.02 | — | 0.02 | — | — | 99.88 | 2.02 |
38 | Zk1706-61 | 53.54 | 46.22 | — | 0.04 | 0.11 | — | 0.05 | 0.05 | 0.01 | 0.03 | — | 0.02 | — | 0.05 | — | 0.01 | 100.14 | 2.02 |
39 | Zk2105-1-71 | 53.74 | 45.27 | — | — | 0.08 | — | 0.07 | 0.01 | — | — | — | — | — | 0.00 | — | — | 99.17 | 2.07 |
40 | Zk2105-162 | 54.65 | 45.66 | 0.04 | — | 0.07 | — | 0.00 | — | — | — | — | 0.00 | — | 0.04 | 0.04 | — | 100.51 | 2.08 |
41 | Zk1706-41 | 53.55 | 47.03 | — | 0.03 | 0.10 | — | 0.04 | 0.01 | — | — | — | 0.03 | — | — | — | — | 100.78 | 1.98 |
42 | Zk1706-111 | 53.11 | 46.55 | 0.05 | 0.01 | 0.21 | — | 0.08 | 0.01 | — | 0.07 | — | — | — | — | — | 0.02 | 100.10 | 1.99 |
43 | Zk0701-51 | 53.00 | 46.23 | 0.02 | — | 0.11 | — | — | 0.02 | 0.05 | — | — | 0.01 | — | — | — | — | 99.43 | 2.00 |
44 | Zk0701-41 | 53.39 | 46.28 | — | 0.01 | 0.06 | — | 0.04 | 0.01 | 0.01 | — | — | 0.01 | — | 0.03 | — | 0.01 | 99.84 | 2.01 |
45 | Zk21B06-71 | 53.15 | 46.33 | — | 0.02 | 0.08 | — | — | 0.02 | 0.03 | 0.01 | — | — | — | — | — | 0.01 | 99.65 | 2.00 |
46 | Zk21B06-12 | 53.08 | 46.68 | 0.05 | — | 0.03 | — | 0.02 | 0.04 | 0.00 | — | — | — | — | 0.07 | — | 0.00 | 99.97 | 1.98 |
47 | Zk21B06-22 | 53.13 | 46.38 | — | — | 0.34 | — | 0.01 | 0.03 | — | — | — | 0.02 | — | — | — | — | 99.92 | 2.00 |
48 | Zk1101-71 | 53.60 | 46.39 | — | — | 0.08 | — | — | 0.00 | — | 0.02 | — | — | — | — | — | 0.03 | 100.13 | 2.01 |
表2 科洛金矿床黄铁矿电子探针分析结果
Table 2 Results of EPMA analysis of pyrites from the Keluo gold deposit
序号 | 样品号 | wB/% | S/Fe | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
S | Fe | Au | Ag | Co | Ni | As | Sb | Se | Te | Bi | Cd | Ge | Zn | Pb | Cu | Total | |||
1 | Zk21B06-51 | 52.33 | 46.32 | — | 0.03 | 0.05 | — | 0.10 | — | — | 0.04 | — | — | — | 0.00 | — | — | 98.87 | 1.97 |
2 | Zk21B06-11 | 53.34 | 46.42 | 0.06 | 0.04 | 0.06 | — | 0.03 | 0.00 | — | — | — | — | — | — | — | 0.01 | 99.95 | 2.00 |
3 | Zk2105-11 | 52.96 | 46.37 | 0.05 | — | 0.09 | — | 0.04 | 0.00 | — | — | — | 0.02 | — | — | — | 0.03 | 99.56 | 1.99 |
4 | Zk2105-191 | 52.78 | 46.40 | — | — | 0.05 | — | 0.07 | — | 0.01 | 0.03 | — | — | — | — | — | — | 99.35 | 1.98 |
5 | Zk2105-71 | 53.41 | 46.46 | 0.03 | — | 0.09 | — | 0.04 | 0.05 | — | 0.03 | — | — | — | — | 0.02 | 0.01 | 100.13 | 2.00 |
6 | Zk2105-151 | 53.00 | 46.06 | 0.03 | 0.00 | 0.12 | — | 0.04 | — | — | 0.01 | — | 0.01 | — | — | — | 0.02 | 99.29 | 2.00 |
7 | Zk2104-261 | 53.04 | 46.35 | — | — | 0.18 | — | 0.01 | — | — | 0.01 | — | — | — | 0.01 | — | 0.01 | 99.61 | 1.99 |
8 | Zk1904-11 | 53.27 | 46.73 | 0.01 | 0.03 | 0.04 | — | — | 0.01 | — | 0.01 | — | 0.01 | — | — | — | 0.00 | 100.11 | 1.99 |
9 | Zk0302-61 | 53.24 | 46.66 | 0.01 | — | 0.11 | — | 0.07 | — | 0.03 | 0.00 | — | 0.03 | — | — | — | — | 100.15 | 1.99 |
10 | Zk2104-1-71 | 53.40 | 46.46 | 0.01 | — | 0.08 | — | — | 0.01 | — | 0.03 | — | — | — | — | 0.08 | 0.01 | 100.08 | 2.00 |
11 | Zk2104-151 | 53.31 | 46.64 | — | — | 0.06 | — | — | 0.01 | 0.01 | — | — | — | — | — | — | 0.01 | 100.03 | 1.99 |
12 | Zk0704-81 | 53.59 | 46.85 | 0.00 | 0.02 | 0.19 | — | 0.06 | — | — | — | — | — | — | 0.04 | — | — | 100.75 | 1.99 |
13 | Zk2104-351 | 53.34 | 46.38 | — | 0.07 | 0.19 | — | 0.04 | 0.03 | — | 0.03 | — | — | — | 0.01 | — | 0.03 | 100.10 | 2.00 |
14 | Zk0302-51 | 53.12 | 46.37 | — | 0.04 | 0.05 | — | 0.08 | — | — | — | — | — | — | — | — | 0.05 | 99.70 | 2.00 |
15 | Zk1706-11 | 53.45 | 46.56 | 0.05 | — | 0.10 | — | 0.08 | 0.01 | 0.01 | — | — | 0.03 | — | — | — | — | 100.30 | 2.00 |
16 | Zk19B06-31 | 53.01 | 46.14 | 0.03 | — | 0.05 | — | 0.04 | 0.05 | 0.01 | 0.01 | — | 0.03 | — | — | — | 0.04 | 99.40 | 2.00 |
17 | Zk2105-51 | 53.38 | 46.31 | 0.03 | — | 0.06 | 0.07 | 0.09 | 0.00 | — | 0.01 | — | 0.01 | — | 0.09 | — | 0.03 | 100.07 | 2.01 |
18 | Zk2105-221 | 53.82 | 46.17 | — | 0.02 | 0.09 | — | 0.02 | — | — | — | — | 0.02 | — | — | — | 0.03 | 100.17 | 2.03 |
19 | Zk1908-21 | 53.49 | 46.53 | — | — | 0.10 | — | 0.02 | 0.00 | 0.02 | — | — | 0.02 | — | 0.05 | — | 0.05 | 100.28 | 2.00 |
20 | Zk1908-51 | 53.33 | 46.38 | 0.02 | 0.00 | 0.08 | — | 0.20 | — | — | 0.01 | — | 0.01 | — | — | 0.02 | — | 100.05 | 2.00 |
21 | Zk2104-3191 | 53.08 | 45.94 | — | 0.00 | 0.07 | — | 0.04 | 0.00 | 0.01 | 0.03 | — | 0.02 | — | — | — | 0.05 | 99.23 | 2.01 |
22 | Zk0704-51 | 53.45 | 46.21 | 0.01 | 0.00 | 0.07 | — | 0.04 | — | — | — | — | 0.02 | — | — | — | — | 99.79 | 2.02 |
23 | Zk0302-81 | 53.40 | 46.40 | 0.02 | — | 0.05 | — | 0.02 | 0.01 | — | — | — | 0.02 | — | 0.08 | — | 0.01 | 100.01 | 2.00 |
24 | Zk2104-3171 | 52.93 | 45.99 | — | 0.02 | 0.04 | — | 0.09 | — | 0.05 | — | — | 0.02 | — | — | — | — | 99.15 | 2.00 |
25 | Zk170621 | 53.50 | 46.48 | 0.01 | 0.01 | 0.10 | — | 0.10 | — | — | 0.00 | — | — | — | — | — | 0.04 | 100.24 | 2.00 |
26 | Zk2104-2151 | 53.40 | 46.39 | 0.05 | — | 0.09 | — | 0.04 | — | — | — | — | 0.00 | — | — | — | — | 99.97 | 2.01 |
27 | Zk2702-31 | 53.04 | 46.06 | 0.02 | — | 0.07 | — | 0.00 | — | 0.02 | — | — | 0.02 | — | — | — | — | 99.23 | 2.01 |
28 | Zk2105-261 | 53.17 | 46.16 | 0.01 | 0.02 | 0.09 | — | — | 0.02 | — | — | — | — | — | — | — | 0.02 | 99.49 | 2.01 |
29 | Zk2105-21 | 53.37 | 46.34 | — | — | 0.06 | — | 0.05 | 0.03 | 0.01 | — | — | 0.02 | — | — | — | — | 99.87 | 2.01 |
30 | Zk2104-3121 | 53.01 | 46.00 | — | — | 0.06 | — | — | — | 0.04 | 0.04 | — | — | 0.01 | 0.01 | — | 0.01 | 99.18 | 2.01 |
31 | Zk1706-31 | 53.39 | 46.31 | 0.01 | — | 0.07 | — | 0.01 | — | — | — | — | 0.02 | — | 0.02 | — | 0.01 | 99.82 | 2.01 |
32 | Zk19B06-61 | 53.30 | 46.22 | 0.02 | 0.02 | 0.07 | — | 0.02 | — | — | — | — | 0.00 | — | 0.03 | — | — | 99.67 | 2.01 |
33 | Zk2105-231 | 53.33 | 46.21 | — | — | 0.07 | — | — | 0.04 | — | — | — | 0.03 | — | 0.03 | 0.03 | — | 99.73 | 2.01 |
34 | Zk21B06-21 | 52.92 | 45.82 | 0.02 | 0.02 | 0.20 | — | 0.04 | 0.06 | — | — | — | — | — | 0.02 | — | 0.02 | 99.08 | 2.01 |
35 | Zk0704-41 | 53.32 | 46.05 | — | — | 0.05 | — | 0.02 | 0.01 | 0.01 | 0.01 | — | 0.01 | — | — | — | — | 99.48 | 2.02 |
36 | Zk2702-61 | 53.25 | 46.04 | 0.01 | 0.01 | 0.07 | — | 0.05 | — | — | 0.01 | — | — | 0.01 | — | 0.04 | 0.00 | 99.47 | 2.02 |
37 | Zk1904-31 | 53.56 | 46.11 | — | 0.01 | 0.09 | — | 0.04 | — | 0.02 | 0.01 | — | 0.02 | — | 0.02 | — | — | 99.88 | 2.02 |
38 | Zk1706-61 | 53.54 | 46.22 | — | 0.04 | 0.11 | — | 0.05 | 0.05 | 0.01 | 0.03 | — | 0.02 | — | 0.05 | — | 0.01 | 100.14 | 2.02 |
39 | Zk2105-1-71 | 53.74 | 45.27 | — | — | 0.08 | — | 0.07 | 0.01 | — | — | — | — | — | 0.00 | — | — | 99.17 | 2.07 |
40 | Zk2105-162 | 54.65 | 45.66 | 0.04 | — | 0.07 | — | 0.00 | — | — | — | — | 0.00 | — | 0.04 | 0.04 | — | 100.51 | 2.08 |
41 | Zk1706-41 | 53.55 | 47.03 | — | 0.03 | 0.10 | — | 0.04 | 0.01 | — | — | — | 0.03 | — | — | — | — | 100.78 | 1.98 |
42 | Zk1706-111 | 53.11 | 46.55 | 0.05 | 0.01 | 0.21 | — | 0.08 | 0.01 | — | 0.07 | — | — | — | — | — | 0.02 | 100.10 | 1.99 |
43 | Zk0701-51 | 53.00 | 46.23 | 0.02 | — | 0.11 | — | — | 0.02 | 0.05 | — | — | 0.01 | — | — | — | — | 99.43 | 2.00 |
44 | Zk0701-41 | 53.39 | 46.28 | — | 0.01 | 0.06 | — | 0.04 | 0.01 | 0.01 | — | — | 0.01 | — | 0.03 | — | 0.01 | 99.84 | 2.01 |
45 | Zk21B06-71 | 53.15 | 46.33 | — | 0.02 | 0.08 | — | — | 0.02 | 0.03 | 0.01 | — | — | — | — | — | 0.01 | 99.65 | 2.00 |
46 | Zk21B06-12 | 53.08 | 46.68 | 0.05 | — | 0.03 | — | 0.02 | 0.04 | 0.00 | — | — | — | — | 0.07 | — | 0.00 | 99.97 | 1.98 |
47 | Zk21B06-22 | 53.13 | 46.38 | — | — | 0.34 | — | 0.01 | 0.03 | — | — | — | 0.02 | — | — | — | — | 99.92 | 2.00 |
48 | Zk1101-71 | 53.60 | 46.39 | — | — | 0.08 | — | — | 0.00 | — | 0.02 | — | — | — | — | — | 0.03 | 100.13 | 2.01 |
样品号 | wB/10-6 | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Y | ||
Zk2105-2 | 7.17 | 13.60 | 1.72 | 6.90 | 1.250 | 0.207 | 0.756 | 0.102 | 0.374 | 0.067 | 0.234 | 0.041 | 0.312 | 0.052 | 1.70 | |
Zk2105-1 | 8.98 | 18.10 | 2.16 | 8.55 | 1.510 | 0.262 | 1.060 | 0.125 | 0.544 | 0.086 | 0.281 | 0.039 | 0.282 | 0.031 | 2.16 | |
Zk2104 | 6.64 | 16.10 | 1.86 | 8.22 | 1.500 | 0.221 | 1.200 | 0.158 | 0.784 | 0.139 | 0.359 | 0.065 | 0.387 | 0.068 | 3.42 | |
Zk1906 | 5.64 | 13.50 | 1.48 | 6.50 | 1.100 | 0.187 | 0.833 | 0.095 | 0.428 | 0.085 | 0.200 | 0.037 | 0.221 | 0.036 | 2.09 | |
Zk0903 | 8.16 | 16.80 | 2.16 | 8.16 | 1.360 | 0.261 | 0.957 | 0.122 | 0.451 | 0.083 | 0.223 | 0.036 | 0.258 | 0.037 | 2.03 | |
Zk1902 | 13.50 | 25.00 | 3.15 | 12.90 | 2.220 | 0.464 | 1.670 | 0.255 | 1.090 | 0.198 | 0.630 | 0.088 | 0.537 | 0.079 | 5.17 | |
Zk21B02 | 3.26 | 7.03 | 0.83 | 3.13 | 0.596 | 0.096 | 0.507 | 0.061 | 0.240 | 0.041 | 0.115 | 0.018 | 0.113 | 0.017 | 0.95 | |
Zk2108 | 9.29 | 17.90 | 2.34 | 8.06 | 1.340 | 0.208 | 0.843 | 0.109 | 0.377 | 0.055 | 0.159 | 0.024 | 0.139 | 0.019 | 1.40 | |
样品号 | wB/10-6 | |||||||||||||||
Rb | Ba | Th | U | Ta | Nb | Sr | Zr | Hf | Ga | Cs | W | Co | Ni | Cu | ||
Zk2105-2 | 1.31 | 8.93 | 2.18 | 0.820 | 0.002 | 0.210 | 4.58 | 17.90 | 0.541 | 1.03 | 0.040 | 1.540 | 146 | 190 | 115 | |
Zk2105-1 | 3.67 | 11.60 | 2.72 | 0.724 | 0.015 | 0.228 | 5.38 | 10.20 | 0.291 | 1.65 | 0.108 | 0.799 | 352 | 528 | 155 | |
Zk2104 | 3.89 | 45.70 | 2.73 | 1.770 | 0.022 | 1.070 | 14.80 | 17.00 | 0.387 | 1.43 | 0.117 | 19.000 | 334 | 183 | 303 | |
Zk1906 | 1.63 | 6.66 | 1.86 | 2.070 | 0.002 | 0.314 | 6.86 | 2.77 | 0.107 | 1.30 | 0.034 | 0.525 | 370 | 191 | 348 | |
Zk0903 | 2.03 | 11.30 | 3.96 | 3.190 | 0.029 | 0.096 | 3.22 | 3.91 | 0.164 | 1.40 | 0.046 | 3.510 | 245 | 114 | 43 | |
Zk1902 | 3.18 | 12.10 | 4.57 | 19.600 | 0.011 | 0.514 | 5.42 | 5.71 | 0.205 | 1.82 | 0.187 | 1.160 | 554 | 189 | 208 | |
Zk21B02 | 2.49 | 7.00 | 1.20 | 0.202 | 0.002 | 0.211 | 3.73 | 2.75 | 0.092 | 1.11 | 0.058 | 0.916 | 323 | 556 | 546 | |
Zk2108 | 4.00 | 114.00 | 3.20 | 2.560 | 0.008 | 0.079 | 4.77 | 5.30 | 0.077 | 1.66 | 0.067 | 0.499 | 129 | 134 | 61 | |
样品号 | wB/10-6 | |||||||||||||||
Pb | Zn | Bi | Li | Be | Sc | V | Cr | Mo | Cd | Sb | Tl | ∑REE | LREE | HREE | ||
Zk2105-2 | 55 262 | 1 638 | 35.70 | 0.62 | 0.011 | 0.488 | 1.05 | 0.991 | 12.700 | 25.50 | 7.78 | 0.293 | 34.49 | 30.85 | 3.64 | |
Zk2105-1 | 1 059 | 161 | 7.16 | 2.57 | 0.058 | 1.170 | 2.53 | 3.700 | 2.660 | 2.61 | 2.78 | 0.103 | 44.17 | 39.56 | 4.61 | |
Zk2104 | 4 233 | 837 | 8.95 | 2.74 | 0.044 | 2.130 | 2.00 | 2.490 | 16.20 | 13.80 | 5.82 | 0.123 | 41.12 | 34.54 | 6.58 | |
Zk1906 | 3 178 | 1 137 | 14.60 | 2.06 | 0.06 | 0.467 | 1.62 | 1.270 | 5.260 | 22.80 | 1.83 | 0.066 | 32.43 | 28.41 | 4.03 | |
Zk0903 | 3 205 | 2 895 | 62.50 | 1.75 | 0.038 | 0.869 | 1.61 | 0.896 | 8.100 | 39.00 | 2.59 | 0.245 | 41.10 | 36.90 | 4.20 | |
Zk1902 | 1 661 | 105 | 27.20 | 1.51 | 0.028 | 1.050 | 3.52 | 0.968 | 7.150 | 1.30 | 4.33 | 0.474 | 66.95 | 57.23 | 9.72 | |
Zk21B02 | 608 | 139 | 21.60 | 2.47 | 0.045 | 0.304 | 1.54 | 1.700 | 0.417 | 2.64 | 1.25 | 0.022 | 17.00 | 14.94 | 2.06 | |
Zk2108 | 106 | 18 | 14.00 | 2.12 | 0.024 | 1.080 | 2.38 | 2.600 | 5.340 | 0.09 | 1.51 | 0.041 | 42.26 | 39.14 | 3.13 | |
样品号 | ∑Ce/ ∑Y | (La/ Yb)N | (La/ Lu)N | (Ce/ Yb)N | (La/ Sm)N | (Gd/ Yb)N | δEu | Hf/Sm | Nb/La | Th/La | Y/Ho | Zr/Hf | Nb/Ta | Co/Ni | Sr/Ba | |
Zk2105-2 | 8.48 | 16.48 | 14.78 | 12.11 | 3.70 | 2.00 | 0.60 | 0.43 | 0.03 | 0.30 | 25.37 | 33.09 | 105.00 | 0.77 | 0.51 | |
Zk2105-1 | 8.58 | 22.84 | 31.05 | 17.83 | 3.84 | 3.11 | 0.60 | 0.19 | 0.03 | 0.30 | 25.12 | 35.05 | 15.20 | 0.67 | 0.46 | |
Zk2104 | 5.25 | 12.31 | 10.47 | 11.56 | 2.86 | 2.57 | 0.49 | 0.26 | 0.16 | 0.41 | 24.60 | 43.93 | 48.64 | 1.83 | 0.32 | |
Zk1906 | 7.05 | 18.31 | 16.79 | 16.97 | 3.31 | 3.12 | 0.57 | 0.10 | 0.06 | 0.33 | 24.59 | 25.89 | 157.00 | 1.94 | 1.03 | |
Zk0903 | 8.79 | 22.69 | 23.64 | 18.09 | 3.87 | 3.07 | 0.66 | 0.12 | 0.01 | 0.49 | 24.46 | 23.84 | 3.31 | 2.15 | 0.28 | |
Zk1902 | 5.89 | 18.03 | 18.31 | 12.93 | 3.93 | 2.57 | 0.71 | 0.09 | 0.04 | 0.34 | 26.11 | 27.85 | 46.73 | 2.93 | 0.45 | |
Zk21B02 | 7.25 | 20.69 | 20.55 | 17.28 | 3.53 | 3.71 | 0.52 | 0.15 | 0.06 | 0.37 | 23.17 | 29.89 | 105.50 | 0.58 | 0.53 | |
Zk2108 | 12.50 | 47.94 | 52.40 | 35.77 | 4.48 | 5.02 | 0.56 | 0.06 | 0.01 | 0.34 | 25.45 | 68.83 | 9.88 | 0.96 | 0.04 |
表3 科洛金矿床黄铁矿的稀土元素、微量元素分析结果
Table 3 Trace element and REE composition of pyrite in the Keluo gold deposit
样品号 | wB/10-6 | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Y | ||
Zk2105-2 | 7.17 | 13.60 | 1.72 | 6.90 | 1.250 | 0.207 | 0.756 | 0.102 | 0.374 | 0.067 | 0.234 | 0.041 | 0.312 | 0.052 | 1.70 | |
Zk2105-1 | 8.98 | 18.10 | 2.16 | 8.55 | 1.510 | 0.262 | 1.060 | 0.125 | 0.544 | 0.086 | 0.281 | 0.039 | 0.282 | 0.031 | 2.16 | |
Zk2104 | 6.64 | 16.10 | 1.86 | 8.22 | 1.500 | 0.221 | 1.200 | 0.158 | 0.784 | 0.139 | 0.359 | 0.065 | 0.387 | 0.068 | 3.42 | |
Zk1906 | 5.64 | 13.50 | 1.48 | 6.50 | 1.100 | 0.187 | 0.833 | 0.095 | 0.428 | 0.085 | 0.200 | 0.037 | 0.221 | 0.036 | 2.09 | |
Zk0903 | 8.16 | 16.80 | 2.16 | 8.16 | 1.360 | 0.261 | 0.957 | 0.122 | 0.451 | 0.083 | 0.223 | 0.036 | 0.258 | 0.037 | 2.03 | |
Zk1902 | 13.50 | 25.00 | 3.15 | 12.90 | 2.220 | 0.464 | 1.670 | 0.255 | 1.090 | 0.198 | 0.630 | 0.088 | 0.537 | 0.079 | 5.17 | |
Zk21B02 | 3.26 | 7.03 | 0.83 | 3.13 | 0.596 | 0.096 | 0.507 | 0.061 | 0.240 | 0.041 | 0.115 | 0.018 | 0.113 | 0.017 | 0.95 | |
Zk2108 | 9.29 | 17.90 | 2.34 | 8.06 | 1.340 | 0.208 | 0.843 | 0.109 | 0.377 | 0.055 | 0.159 | 0.024 | 0.139 | 0.019 | 1.40 | |
样品号 | wB/10-6 | |||||||||||||||
Rb | Ba | Th | U | Ta | Nb | Sr | Zr | Hf | Ga | Cs | W | Co | Ni | Cu | ||
Zk2105-2 | 1.31 | 8.93 | 2.18 | 0.820 | 0.002 | 0.210 | 4.58 | 17.90 | 0.541 | 1.03 | 0.040 | 1.540 | 146 | 190 | 115 | |
Zk2105-1 | 3.67 | 11.60 | 2.72 | 0.724 | 0.015 | 0.228 | 5.38 | 10.20 | 0.291 | 1.65 | 0.108 | 0.799 | 352 | 528 | 155 | |
Zk2104 | 3.89 | 45.70 | 2.73 | 1.770 | 0.022 | 1.070 | 14.80 | 17.00 | 0.387 | 1.43 | 0.117 | 19.000 | 334 | 183 | 303 | |
Zk1906 | 1.63 | 6.66 | 1.86 | 2.070 | 0.002 | 0.314 | 6.86 | 2.77 | 0.107 | 1.30 | 0.034 | 0.525 | 370 | 191 | 348 | |
Zk0903 | 2.03 | 11.30 | 3.96 | 3.190 | 0.029 | 0.096 | 3.22 | 3.91 | 0.164 | 1.40 | 0.046 | 3.510 | 245 | 114 | 43 | |
Zk1902 | 3.18 | 12.10 | 4.57 | 19.600 | 0.011 | 0.514 | 5.42 | 5.71 | 0.205 | 1.82 | 0.187 | 1.160 | 554 | 189 | 208 | |
Zk21B02 | 2.49 | 7.00 | 1.20 | 0.202 | 0.002 | 0.211 | 3.73 | 2.75 | 0.092 | 1.11 | 0.058 | 0.916 | 323 | 556 | 546 | |
Zk2108 | 4.00 | 114.00 | 3.20 | 2.560 | 0.008 | 0.079 | 4.77 | 5.30 | 0.077 | 1.66 | 0.067 | 0.499 | 129 | 134 | 61 | |
样品号 | wB/10-6 | |||||||||||||||
Pb | Zn | Bi | Li | Be | Sc | V | Cr | Mo | Cd | Sb | Tl | ∑REE | LREE | HREE | ||
Zk2105-2 | 55 262 | 1 638 | 35.70 | 0.62 | 0.011 | 0.488 | 1.05 | 0.991 | 12.700 | 25.50 | 7.78 | 0.293 | 34.49 | 30.85 | 3.64 | |
Zk2105-1 | 1 059 | 161 | 7.16 | 2.57 | 0.058 | 1.170 | 2.53 | 3.700 | 2.660 | 2.61 | 2.78 | 0.103 | 44.17 | 39.56 | 4.61 | |
Zk2104 | 4 233 | 837 | 8.95 | 2.74 | 0.044 | 2.130 | 2.00 | 2.490 | 16.20 | 13.80 | 5.82 | 0.123 | 41.12 | 34.54 | 6.58 | |
Zk1906 | 3 178 | 1 137 | 14.60 | 2.06 | 0.06 | 0.467 | 1.62 | 1.270 | 5.260 | 22.80 | 1.83 | 0.066 | 32.43 | 28.41 | 4.03 | |
Zk0903 | 3 205 | 2 895 | 62.50 | 1.75 | 0.038 | 0.869 | 1.61 | 0.896 | 8.100 | 39.00 | 2.59 | 0.245 | 41.10 | 36.90 | 4.20 | |
Zk1902 | 1 661 | 105 | 27.20 | 1.51 | 0.028 | 1.050 | 3.52 | 0.968 | 7.150 | 1.30 | 4.33 | 0.474 | 66.95 | 57.23 | 9.72 | |
Zk21B02 | 608 | 139 | 21.60 | 2.47 | 0.045 | 0.304 | 1.54 | 1.700 | 0.417 | 2.64 | 1.25 | 0.022 | 17.00 | 14.94 | 2.06 | |
Zk2108 | 106 | 18 | 14.00 | 2.12 | 0.024 | 1.080 | 2.38 | 2.600 | 5.340 | 0.09 | 1.51 | 0.041 | 42.26 | 39.14 | 3.13 | |
样品号 | ∑Ce/ ∑Y | (La/ Yb)N | (La/ Lu)N | (Ce/ Yb)N | (La/ Sm)N | (Gd/ Yb)N | δEu | Hf/Sm | Nb/La | Th/La | Y/Ho | Zr/Hf | Nb/Ta | Co/Ni | Sr/Ba | |
Zk2105-2 | 8.48 | 16.48 | 14.78 | 12.11 | 3.70 | 2.00 | 0.60 | 0.43 | 0.03 | 0.30 | 25.37 | 33.09 | 105.00 | 0.77 | 0.51 | |
Zk2105-1 | 8.58 | 22.84 | 31.05 | 17.83 | 3.84 | 3.11 | 0.60 | 0.19 | 0.03 | 0.30 | 25.12 | 35.05 | 15.20 | 0.67 | 0.46 | |
Zk2104 | 5.25 | 12.31 | 10.47 | 11.56 | 2.86 | 2.57 | 0.49 | 0.26 | 0.16 | 0.41 | 24.60 | 43.93 | 48.64 | 1.83 | 0.32 | |
Zk1906 | 7.05 | 18.31 | 16.79 | 16.97 | 3.31 | 3.12 | 0.57 | 0.10 | 0.06 | 0.33 | 24.59 | 25.89 | 157.00 | 1.94 | 1.03 | |
Zk0903 | 8.79 | 22.69 | 23.64 | 18.09 | 3.87 | 3.07 | 0.66 | 0.12 | 0.01 | 0.49 | 24.46 | 23.84 | 3.31 | 2.15 | 0.28 | |
Zk1902 | 5.89 | 18.03 | 18.31 | 12.93 | 3.93 | 2.57 | 0.71 | 0.09 | 0.04 | 0.34 | 26.11 | 27.85 | 46.73 | 2.93 | 0.45 | |
Zk21B02 | 7.25 | 20.69 | 20.55 | 17.28 | 3.53 | 3.71 | 0.52 | 0.15 | 0.06 | 0.37 | 23.17 | 29.89 | 105.50 | 0.58 | 0.53 | |
Zk2108 | 12.50 | 47.94 | 52.40 | 35.77 | 4.48 | 5.02 | 0.56 | 0.06 | 0.01 | 0.34 | 25.45 | 68.83 | 9.88 | 0.96 | 0.04 |
图6 科洛金矿床黄铁矿的稀土配分曲线(a)和微量元素蛛网图(b)
Fig.6 Chondrite-normalized REE patterns (a) and primitive mantle-normalized trace element spidergrams (b) of pyrites from the Keluo gold deposit
样品号 | 4He含量 /10-7 | 3He含量 /10-13 | 40Ar含量 /10-7 | 36Ar含量 /10-7 | 40Ar*含量 /10-7 | (3He/4He) /10-6 | 3He/4He (Ra) | 40Ar /36Ar | 38Ar /36Ar | 40Ar* /4He | F4He | w(4HeMantle) /% |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Zk2105-2 | 4.64 | 10.811 | 2.450 | 0.004 28 | 1.18 | 2.330 | 1.66 | 572.1 | 0.194 | 0.255 3 | 6 551 | 21.04 |
Zk2104 | 3.35 | 2.405 | 0.527 | 0.001 29 | 0.14 | 0.718 | 0.51 | 407.6 | 0.200 | 0.043 3 | 15 691 | 6.36 |
Zk21B03 | 4.99 | 8.134 | 3.600 | 0.006 68 | 1.63 | 1.630 | 1.16 | 539.2 | 0.193 | 0.326 1 | 4 514 | 14.66 |
表4 科洛金矿床黄铁矿流体包裹体的He-Ar同位素特征组成
Table 4 Characteristic He-Ar isotopic composition of pyrites in the Keluo gold deposit
样品号 | 4He含量 /10-7 | 3He含量 /10-13 | 40Ar含量 /10-7 | 36Ar含量 /10-7 | 40Ar*含量 /10-7 | (3He/4He) /10-6 | 3He/4He (Ra) | 40Ar /36Ar | 38Ar /36Ar | 40Ar* /4He | F4He | w(4HeMantle) /% |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Zk2105-2 | 4.64 | 10.811 | 2.450 | 0.004 28 | 1.18 | 2.330 | 1.66 | 572.1 | 0.194 | 0.255 3 | 6 551 | 21.04 |
Zk2104 | 3.35 | 2.405 | 0.527 | 0.001 29 | 0.14 | 0.718 | 0.51 | 407.6 | 0.200 | 0.043 3 | 15 691 | 6.36 |
Zk21B03 | 4.99 | 8.134 | 3.600 | 0.006 68 | 1.63 | 1.630 | 1.16 | 539.2 | 0.193 | 0.326 1 | 4 514 | 14.66 |
图7 科洛金矿床黄铁矿流体包裹体的4He-3He图(a)和R/Ra-40Ar/36Ar图(b)
Fig.7 3He-4He (a) and R/Ra-40Ar/36Ar (b) plots of inclusion-trapped fluids in pyrite mineral from the Keluo gold deposit
样号 | δ34S/‰ | 206Pb/204Pb | 207Pb/204Pb | 208Pb/204Pb |
---|---|---|---|---|
Zk2105-2 | +7.6 | 18.206 | 15.594 | 38.207 |
Zk2105-1 | +4.0 | 18.186 | 15.556 | 38.092 |
Zk2104 | +4.9 | 18.194 | 15.574 | 38.153 |
Zk1906 | +2.3 | 18.194 | 15.584 | 38.192 |
Zk0903 | +7.1 | 18.206 | 15.593 | 38.218 |
Zk1902 | +4.5 | 18.211 | 15.582 | 38.167 |
Zk21B02 | +2.4 | 18.157 | 15.542 | 38.032 |
Zk2108 | +2.9 | 18.186 | 15.542 | 38.075 |
表5 科洛金矿床黄铁矿的硫、铅同位素组成
Table 5 Sulfur and Pb isotope compositions of pyrites in the Keluo gold deposit
样号 | δ34S/‰ | 206Pb/204Pb | 207Pb/204Pb | 208Pb/204Pb |
---|---|---|---|---|
Zk2105-2 | +7.6 | 18.206 | 15.594 | 38.207 |
Zk2105-1 | +4.0 | 18.186 | 15.556 | 38.092 |
Zk2104 | +4.9 | 18.194 | 15.574 | 38.153 |
Zk1906 | +2.3 | 18.194 | 15.584 | 38.192 |
Zk0903 | +7.1 | 18.206 | 15.593 | 38.218 |
Zk1902 | +4.5 | 18.211 | 15.582 | 38.167 |
Zk21B02 | +2.4 | 18.157 | 15.542 | 38.032 |
Zk2108 | +2.9 | 18.186 | 15.542 | 38.075 |
图8 科洛金矿床黄铁矿铅同位素构造模式图(底图据文献[48])
Fig.8 Correlation diagrams for Pb isotopes of pyrite showing tectonic setting of the Keluo gold deposit. Adapted from [48].
图10 科洛金矿床黄铁矿Co/Ni分布图(不同地质环境边界的定义,据文献[70,71])
Fig.10 Cobalt and Ni contents and Co/Ni ratios of pyrite of different metallogenesis in the Keluo gold deposit (boundaries of geological settings as defined in [70-71])
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