辽东鸭绿江金成矿带长甸金矿床成因:黄铁矿原位S-Pb同位素和微量元素证据

doi:10.13745/j.esf.sf.2025.1.39

地学前缘 ›› 2026, Vol. 33 ›› Issue (2): 181-194.DOI: 10.13745/j.esf.sf.2025.1.39

• 战略矿产成因机制与金属富集 • 上一篇下一篇

辽东鸭绿江金成矿带长甸金矿床成因:黄铁矿原位S-Pb同位素和微量元素证据

俞炳¹^,²(), 曾庆栋³^,⁴, 杨进辉³^,⁴, 张晓飞¹^,², 王珺璐¹^,², 李逢春³^,⁴, 陈辉¹^,²^,^*()

1.中国地质调查局发展研究中心, 北京 100037
2.自然资源部矿产勘查技术指导中心, 北京 100037
3.中国科学院地质与地球物理研究所岩石圈演化与环境演变全国重点实验室, 北京 100029
4.中国科学院大学地球与行星科学学院, 北京 100049

收稿日期:2025-03-13 修回日期:2025-10-23 出版日期:2026-03-25 发布日期:2026-01-29
通信作者: *陈辉(1986—),男,博士,正高级工程师,主要从事找矿预测研究工作。E-mail: cgschenhui@163.com
作者简介:俞炳(1993—),男,博士,高级工程师,主要从事找矿预测研究工作。E-mail: yubing15@mails.ucas.ac.cn
基金资助:
国家自然科学基金项目(42302079);深地国家重大科技专项项目(2024ZD1001301);国家重点研发计划项目(2021YFC2901805-02);中国地质调查局项目(DD20230356)

Genesis of the Changdian gold deposit, Yalujiang gold metallogenic belt, Liaodong Peninsula: Evidence from in situ S-Pb isotopes and trace element contents of pyrite

YU Bing¹^,²(), ZENG Qingdong³^,⁴, YANG Jinhui³^,⁴, ZHANG Xiaofei¹^,², WANG Junlu¹^,², LI Fengchun³^,⁴, CHEN Hui¹^,²^,^*()

1. Development and Research Center, China Geological Survey, Beijing 100037, China
2. Mineral Exploration Technical Guidance Center, Ministry of Natural Resources, Beijing 100037, China
3. State Key Laboratory of Lithospheric and Environmental Coevolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
4. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China

Received:2025-03-13 Revised:2025-10-23 Online:2026-03-25 Published:2026-01-29

摘要/Abstract

摘要：

长甸金矿床是辽东鸭绿江金成矿带上一处石英脉型金矿床(>1 t@2.90×10^-6),金矿体呈脉状赋存于片麻状黑云母花岗岩体内。以往的工作主要为基础地质调查,尚未对长甸金矿床开展过系统的矿床学研究,这极大地制约了长甸金矿床成矿物质和成矿流体来源、矿床成因类型等认识。本文开展了野外基础地质调查,对与金成矿密切相关的黄铁矿开展激光剥蚀电感耦合等离子体质谱仪(laser ablation inductively coupled plasma mass spectrometry,LA-ICP-MS)微量元素和激光剥蚀多接收电感耦合等离子体质谱仪(Laser Ablation Multi-Collector Inductively Coupled Plasma Mass Spectrometry,LA-MC-ICP-MS)S-Pb同位素分析工作。黄铁矿原位S同位素测试结果表明其δ³⁴S值为6.6‰~8.2‰,略高于地幔/岩浆硫值,与盖县组δ³⁴S值范围重叠,推断硫主要来源于岩浆硫,有少量盖县组硫源混入。黄铁矿原位Pb同位素测试结果显示其²⁰⁸Pb/²⁰⁴Pb、²⁰⁷Pb/²⁰⁴Pb和²⁰⁶Pb/²⁰⁴Pb值分别为38.190~39.576、15.528~15.928和17.374~17.803,表明铅主要来源于下地壳,有盖县组铅源混入。黄铁矿原位微量元素测试结果显示其有较高的Co/Ni值(0.32~2.57)和Te/Au值(>10),较为富集Co、Ni、As、Ag、Te、W、Bi和Pb等元素,表明初始流体来源为岩浆热液,盖县组通过强烈的水岩反应将大量成矿元素带入金成矿。综合研究表明,长甸金矿床属岩浆热液型金矿床,金成矿与早白垩世岩浆作用密切相关。

关键词: 长甸金矿床, 鸭绿江金成矿带, S-Pb同位素, 微量元素, 辽东半岛

Abstract:

The Changdian deposit is a quartz-vein type gold deposit (>1t@2.90×10^-6), located on the Yalujiang Gold Metallogenic Belt, Liaodong Peninsula. The gold orebody occurred as vein within the gneissic biotite granite. Some previous work largely focused on basic geological surveys there has not been a systematic study on the Changdian gold deposit, which greatly restricts the understanding of source of ore-forming materials and fluids, as well as the genetic type of the Changdian gold deposit. In this study, we first conducted a field basic geological survey, and reported Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) trace elements and Laser Ablation Multi-Collector Inductively Coupled Plasma Mass Spectrometry (LA-MC-ICP-MS) S-Pb isotopic analyses on pyrite that closely related to gold mineralization. In-situ S isotopic analyses show that pyrite yielded δ³⁴S value of 6.6‰-8.2‰, which is slightly higher than that of mantle/magmatic sulfur, but overlaps with the δ³⁴S value range of the Gaixian Formation, revealing that the sulfur mainly derived from magma, with a small amount of sulfur sources mixed from the Gaixian Formation. In-situ Pb isotopic analyses indicate that pyrite yielded ²⁰⁸Pb/²⁰⁴Pb, ²⁰⁷Pb/²⁰⁴Pb, and ²⁰⁶Pb/²⁰⁴Pb ratios of 38.190-39.576, 15.528-15.928, and 17.374-17.803, respectively, suggesting that lead primarily derived from the lower crust, with some input from the Gaixian Formation. In-situ trace elements analyses show that pyrite yielded high Co/Ni (0.32-2.57) and Te/Au (>10) ratios, is evidently enriched in Co, Ni, As, Ag, Te, W, Bi, and Pb, implying that the fluid was initially of magmatic-hydrothermal origin. The Gaixian Formation brought a large amount of ore-forming elements into gold mineralization by intensive water-rock interaction. Combining previous research, we propose that the Changdian deposit is a magmatic-hydrothermal gold deposit, which is closely related to the Early Cretaceous magmatic activity.

Key words: Changdian gold deposit, Yalujiang gold metallogenic belt, S-Pb isotopes, trace elements, Liaodong Peninsula

中图分类号:

俞炳, 曾庆栋, 杨进辉, 张晓飞, 王珺璐, 李逢春, 陈辉. 辽东鸭绿江金成矿带长甸金矿床成因:黄铁矿原位S-Pb同位素和微量元素证据[J]. 地学前缘, 2026, 33(2): 181-194.

YU Bing, ZENG Qingdong, YANG Jinhui, ZHANG Xiaofei, WANG Junlu, LI Fengchun, CHEN Hui. Genesis of the Changdian gold deposit, Yalujiang gold metallogenic belt, Liaodong Peninsula: Evidence from in situ S-Pb isotopes and trace element contents of pyrite[J]. Earth Science Frontiers, 2026, 33(2): 181-194.

图/表 12

参考文献 61

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样品编号	δ³⁴S值/‰	2SE
3MT-3-01	7.5	0.1
3MT-3-02	7. 6	0.1
3MT-3-03	8.2	0.1
3MT-3-04	7.4	0.1
3MT-3-05	7.3	0.1
3MT-4-06	7.6	0.1
3MT-4-07	7.7	0.1
3MT-4-08	7.8	0.1
3MT-4-09	7.4	0.1
3MT-4-10	7.7	0.1
3MT-5-11	6.6	0.1
3MT-5-12	7.5	0.1
3MT-5-13	7.2	0.1
3MT-5-14	7.6	0.1
3MT-5-15	7.5	0.1

样品编号	δ³⁴S值/‰	2SE
3MT-3-01	7.5	0.1
3MT-3-02	7. 6	0.1
3MT-3-03	8.2	0.1
3MT-3-04	7.4	0.1
3MT-3-05	7.3	0.1
3MT-4-06	7.6	0.1
3MT-4-07	7.7	0.1
3MT-4-08	7.8	0.1
3MT-4-09	7.4	0.1
3MT-4-10	7.7	0.1
3MT-5-11	6.6	0.1
3MT-5-12	7.5	0.1
3MT-5-13	7.2	0.1
3MT-5-14	7.6	0.1
3MT-5-15	7.5	0.1

样品编号	²⁰⁸Pb/²⁰⁴Pb	1SE	²⁰⁷Pb/²⁰⁴Pb	1SE	²⁰⁶Pb/²⁰⁴Pb	1SE
3MT-3-1	38.749	0.033	15.578	0.013	17.423	0.014
3MT-3-2	38.852	0.090	15.583	0.036	17.429	0.040
3MT-3-3	38.586	0.011	15.561	0.004	17.402	0.004
3MT-3-4	39.576	0.555	15.928	0.222	17.803	0.247
3MT-3-5	38.492	0.073	15.537	0.029	17.374	0.033
3MT-4-6	38.488	0.091	15.528	0.036	17.386	0.040
3MT-4-7	38.446	0.147	15.564	0.059	17.392	0.066
3MT-4-8	38.471	0.125	15.554	0.050	17.396	0.056
3MT-4-10	38.807	0.572	15.922	0.236	17.800	0.262
3MT-5-11	38.527	0.012	15.545	0.005	17.387	0.005
3MT-5-13	38.590	0.071	15.595	0.030	17.440	0.033
3MT-5-15	38.541	0.063	15.588	0.025	17.417	0.028
3MT-6-17	38.509	0.201	15.671	0.082	17.536	0.090
3MT-6-19	38.405	0.319	15.624	0.133	17.402	0.149
3MT-6-20	38.190	0.686	15.844	0.286	17.648	0.312

样品编号	²⁰⁸Pb/²⁰⁴Pb	1SE	²⁰⁷Pb/²⁰⁴Pb	1SE	²⁰⁶Pb/²⁰⁴Pb	1SE
3MT-3-1	38.749	0.033	15.578	0.013	17.423	0.014
3MT-3-2	38.852	0.090	15.583	0.036	17.429	0.040
3MT-3-3	38.586	0.011	15.561	0.004	17.402	0.004
3MT-3-4	39.576	0.555	15.928	0.222	17.803	0.247
3MT-3-5	38.492	0.073	15.537	0.029	17.374	0.033
3MT-4-6	38.488	0.091	15.528	0.036	17.386	0.040
3MT-4-7	38.446	0.147	15.564	0.059	17.392	0.066
3MT-4-8	38.471	0.125	15.554	0.050	17.396	0.056
3MT-4-10	38.807	0.572	15.922	0.236	17.800	0.262
3MT-5-11	38.527	0.012	15.545	0.005	17.387	0.005
3MT-5-13	38.590	0.071	15.595	0.030	17.440	0.033
3MT-5-15	38.541	0.063	15.588	0.025	17.417	0.028
3MT-6-17	38.509	0.201	15.671	0.082	17.536	0.090
3MT-6-19	38.405	0.319	15.624	0.133	17.402	0.149
3MT-6-20	38.190	0.686	15.844	0.286	17.648	0.312

样品编号	含量/10^-6
样品编号	Co	Ni	Cu	Zn	As	Se	Mo	Ag	Sn	Sb	Te	W	Au	Bi	Pb
3MT-3_1	12.00	5.61	4.19	2.24	1 305	bdl	bdl	19.07	0.96	3.03	29.68	5.73	0.111	166.1	993.6
3MT-3_2	42.84	20.43	7.43	0.86	1 179	bdl	0.02	155.1	0.00	5.81	44.63	0.03	0.467	594.8	25 761
3MT-3_3	601.0	724.1	0.25	0.57	18.71	bdl	0.12	11.56	bdl	0.12	1.35	59.82	bdl	20.00	62.03
3MT-3_4	815.0	735.4	0.06	1.22	10.85	bdl	0.14	4.73	bdl	0.03	0.30	60.28	0.017	9.53	40.27
3MT-3_5	597.3	332.3	bdl	0.95	9.94	2.41	0.06	1.77	0.06	0.05	1.72	55.23	bdl	27.03	16.57
3MT-3_6	778.6	628.7	bdl	1.05	7.97	bdl	0.12	3.43	0.03	0.07	0.65	53.09	0.008	21.67	28.01
3MT-3_7	0.08	0.15	bdl	0.67	666.5	bdl	0.01	0.02	0.02	0.04	8.77	bdl	0.025	1.03	1.16
3MT-3_8	837.5	645.1	0.04	0.82	9.27	bdl	0.12	2.19	0.08	0.08	bdl	58.67	0.013	9.62	27.98
3MT-3_9	369.6	208.1	bdl	1.13	8.27	15.02	0.30	0.87	0.10	0.04	bdl	85.53	0.023	2.72	67.91
3MT-3_10	1 258	916.4	1.34	1.48	11.33	bdl	1.01	36.92	1.13	0.73	6.27	42.11	0.468	45.69	396.1
3MT-4_11	869.6	738.7	0.10	1.10	9.97	8.05	0.11	1.10	0.06	0.05	bdl	52.10	0.009	4.84	10.42
3MT-4_12	1 123	749.9	0.22	1.60	10.02	7.79	0.35	28.76	0.10	0.17	2.87	95.48	0.140	153.7	3 865
3MT-4_13	778.2	512.3	0.11	1.56	8.17	bdl	0.23	3.38	0.06	0.12	2.26	66.79	0.024	32.23	42.53
3MT-4_14	204.6	82.15	0.03	1.16	7.03	bdl	0.19	4.24	bdl	0.29	1.73	47.53	bdl	16.12	263.9
3MT-4_15	636.8	432.7	0.18	1.85	10.37	bdl	0.30	9.66	0.03	0.09	1.77	55.36	0.054	42.35	267.6
3MT-4_16	1 044	488.8	0.01	1.46	8.82	bdl	0.07	1.99	0.02	0.08	0.08	61.69	bdl	8.40	59.26
3MT-4_17	1 046	585.2	0.31	0.99	8.96	bdl	0.19	12.25	0.06	0.12	3.04	42.42	bdl	1155	157.2
3MT-4_18	1 161	952.9	bdl	0.50	8.93	bdl	0.15	3.64	0.02	0.06	1.35	80.30	bdl	18.11	35.71
3MT-4_19	28.66	15.70	7.51	1.32	1 066	bdl	bdl	23.94	0.09	7.74	16.07	bdl	0.263	284.9	4 497
3MT-4_20	3.08	2.21	1.91	0.78	2 380	16.00	bdl	5.33	0.03	0.84	16.01	bdl	0.137	58.27	194.1
3MT-5_21	2.92	4.10	4.22	1.03	895.1	bdl	0.01	7.95	bdl	3.92	10.27	0.01	0.170	125.6	406.3
3MT-5_22	106.5	41.45	13.20	0.84	2 670	0.10	bdl	358.0	0.02	24.06	64.83	0.31	0.516	5401	9 423
3MT-5_23	745.5	639.2	0.16	1.23	8.15	bdl	0.40	9.85	0.18	0.06	0.79	107.5	0.004	14.63	106.8
3MT-5_24	1225	792.7	0.11	1.23	9.22	5.26	0.19	14.52	0.04	0.17	3.18	69.16	0.082	2204	1945
3MT-5_25	829.9	682.4	0.18	1.22	8.61	bdl	0.19	6.96	0.08	0.06	1.00	89.78	0.016	184.3	61.23
3MT-5_26	198.8	266.8	0.18	1.00	9.80	bdl	0.41	29.79	0.09	0.09	5.75	52.25	bdl	72.45	6502
3MT-5_27	707.5	475.3	bdl	1.06	8.56	bdl	0.64	1.02	0.07	0.13	0.34	67.44	0.008	16.93	15.33
3MT-5_28	653.0	403.3	bdl	1.57	8.54	bdl	0.59	10.37	0.10	0.09	1.37	98.83	0.043	1376	2272
3MT-5_29	740.5	602.0	0.08	1.15	6.86	bdl	0.37	3.94	bdl	0.08	0.00	55.37	bdl	18.69	105.8
3MT-5_30	715.8	472.0	0.01	1.07	20.57	bdl	0.42	4.01	0.00	0.06	0.25	69.21	bdl	21.85	283.2
3MT-5_31	774.6	620.0	0.01	1.18	8.87	bdl	0.27	2.46	0.03	0.06	0.32	110.2	bdl	11.24	110.2
3MT-5_32	1 131	739.7	0.06	1.24	11.30	bdl	0.50	12.39	0.03	0.10	0.99	107.9	0.010	32.19	568.3
3MT-5_33	839.7	2610	72.91	1.45	7.84	2.29	0.05	43.67	0.11	5.71	12.52	0.96	1.173	776.6	4513
3MT-5_34	587.8	615.0	0.14	0.93	10.48	8.31	0.02	1.43	0.06	0.06	0.42	bdl	0.040	12.69	7.67

辽东鸭绿江金成矿带长甸金矿床成因:黄铁矿原位S-Pb同位素和微量元素证据

Genesis of the Changdian gold deposit, Yalujiang gold metallogenic belt, Liaodong Peninsula: Evidence from in situ S-Pb isotopes and trace element contents of pyrite

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