湘东北矿集区井冲铜钴矿床钴的赋存状态

康博; 宁钧陶; 高卓龙; 唐狮象; 邓冠鹏; 刘文浩; 孙华山; 江满容; 俎波

doi:10.19509/j.cnki.dzkq.tb20240724

湘东北矿集区井冲铜钴矿床钴的赋存状态

doi: 10.19509/j.cnki.dzkq.tb20240724

1 .
湖南省地质灾害调查监测所，长沙 410014
2 .
浏阳市鑫磊矿业开发有限公司，湖南浏阳 410327
3 .
中国地质大学（武汉）资源学院，武汉 430074

基金项目: 湖南省浏阳市鑫磊矿业开发有限公司委托项目“浏阳井冲铜钴矿床三维地质建模及找矿预测”

详细信息

作者简介:
康博：E-mail：Kangbo861022@163.com

通讯作者:
E-mail：1195516373@qq.com

中图分类号: P642.22
计量
- 文章访问数: 216
- PDF下载量: 28
- 被引次数: 0
出版历程
- 收稿日期: 2024-11-26
- 录用日期: 2025-04-14
- 修回日期: 2025-04-12
- 网络出版日期: 2025-06-24

Occurrence state of cobalt in Jingchong copper-cobalt deposit in Northeast Hunan Province, China

1 .
Hunan Institute of Geological Disaster Investigation and Monitoring, Changsha 410004, China
2 .
Xinlei Mining Development Co., Ltd., Liuyang Hunan 410327, China
3 .
School of Earth Resources, China University of Geosciences (Wuhan), Wuhan 430074, China

More Information

Author Bio:
E-mail：Kangbo861022@163.com

Corresponding author: E-mail：1195516373@qq.com

摘要

摘要:
湘东北矿集区井冲铜钴矿床蕴含中型规模的钴资源量，但目前对钴的赋存状态和铜钴成矿关系尚不完全清楚。在详细的坑道调查基础上，结合显微镜鉴定、微区X射线荧光扫描分析（μ-XRF）扫面、背散射电子成像（BSE）及电子探针定量分析，详细划分了成矿阶段，开展了钴的赋存状态和铜钴成矿关系研究，在此基础上提出了钴的综合利用建议。结果表明，井冲铜钴矿床钴的赋存形式包括两大类，第一大类为赋存于粗粒黄铁矿中的不可见钴，钴是以溶解−再沉淀方式进入粗粒黄铁矿内部；第二大类为独立的辉砷钴矿，又细分为4种不同的赋存形式，分别为：以镶边结构或穿插结构产于粗粒黄铁矿边缘或内部的辉砷钴矿、产于粗粒黄铁矿内部多孔状部位边缘的辉砷钴矿、产于粗粒黄铁矿旁边石英中的细粒辉砷钴矿−黄铁矿集合体、产于石英生长环带中定向展布的细粒辉砷钴矿−黄铁矿集合体。从钴资源量贡献来看，粗粒黄铁矿中的不可见钴占据主导地位。此外，在成矿顺序上，钴成矿发生在热液期的中阶段，而铜成矿发生在热液期的晚阶段，铅锌成矿与铜成矿近于同时或稍晚。由于辉砷钴矿含量较少且粒径主体小于30 μm，常规的选矿磨细度难以使其分离，因此钴综合利用的重点应该放在含钴的黄铁矿上。未来研究建议进一步圈定富钴矿体，优化选矿工艺，有望提升硫精矿中的钴品位，以实现钴的综合利用。
- 钴矿 /
- 富钴黄铁矿 /
- 辉砷钴矿 /
- 钴赋存状态 /
- μ-XRF /
- 井冲铜钴矿床 /
- 湘东北
Abstract: Objective
The Jingchong copper-cobalt deposit, located in the ore-concentration area of northeastern Hunan Province, contains medium-scale cobalt resources. However, the cobalt occurrence and the relationship between copper and cobalt mineralization remian unclear.
Methods
Based on detailed underground mine investigations, combined with microscopic observation, μ-XRF scanning, backscattered electron imaging (BSE), and electron probe quantitative analysis, the mineralization stages were divided, and the cobalt occurrence and the relationship between copper and cobalt mineralization were studied. We proposed the comprehensive utilization of cobalt .
Results
The results indicate that the cobalt occurrence in the Jingchong copper-cobalt deposit can be classified into two major categories. The first category consists of invisible cobalt hosted in coarse-grained pyrite, where cobalt enters the interior of coarse-grained pyrite through a dissolution-reprecipitation process. The second category is the independent cobaltite mineral, which is further subdivided into four different occurrences: cobaltite occurring as a rim or interstitial texture along the margins or within the interior of coarse-grained pyrite; cobaltite located at the edge of the porous within coarse-grained pyrite; fine-grained cobaltite-pyrite aggregates hosted in quartz adjacent to the coarse-grained pyrite; and fine-grained cobaltite-pyrite aggregates oriented and distributed in the quartz growth bands. In terms of cobalt resource contribution, invisible cobalt in coarse-grained pyrite dominates. Additionally, the mineralization sequence indicates that cobalt mineralization mainly occurs in the intermediate stage of the hydrothermal period, while copper mineralization occurs in the late stage, and lead-zinc mineralization is nearly simultaneous with or slightly later than copper mineralization.
Conclusion
Due to the relatively low content of cobaltite minerals and its grain size predominantly less than 30 μm, conventional mineral processing fineness is difficult to effectively separate them. Therefore, the focus of comprehensive cobalt utilization should be on the coarse-grained cobalt-rich pyrite. The delineation of cobalt-rich ore bodies and the optimization of beneficiation process could potentially enhance the cobalt grade in sulfide concentrates and achieve comprehensive cobalt utilization.
- cobalt deposit /
- cobalt-rich pyrite /
- cobaltite /
- cobalt occurrence /
- μ-XRF /
- Jingchong coppe-cobalt deposit /
- Northeast Hunan Province

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图 1 浏阳井冲铜钴矿床的大地构造位置示意图(a)及区域地质图(b)（据文献[6]修改）

Ⅰ. 汨罗断陷盆地；Ⅱ. 幕府山−望湘断隆；Ⅲ. 长沙−平江断陷盆地；Ⅳ. 浏阳−衡东断隆；Ⅴ. 醴陵−攸县断陷盆地

Figure 1. Geotectonic location (a) and regional geological map (b) of the Jingchong copper-cobalt deposit in Liuyang city

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图 2 浏阳井冲铜钴矿床矿区地质简图

Figure 2. Geological schematic map of the Jingchong copper-cobalt deposit in Liuyang city

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图 3 浏阳井冲铜钴矿床32线剖面图

Bd. 构造破碎带; K₂d. 上白垩统戴家坪组; Gs. 热液蚀变构造角砾岩带; D₃s². 上泥盆统佘田桥组第二岩性段; Hi. 混合岩带; D₃s¹. 上泥盆统佘田桥组第一岩性段; D₂q. 中泥盆统棋梓桥组

Figure 3. Line 32 profile of the Jingchong copper-cobalt deposit in Liuyang city

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图 4 浏阳井冲铜钴矿床围岩及矿石的特征

a. 矿区内F2断裂下盘的花岗质糜棱岩；b. 沿糜棱理分布的绿泥石和黄铁矿化；c. 构造蚀变带上盘的强绿泥石化和硅化蚀变带；d. 7号和8号矿体的总体矿化特征，由石英−粗粒硫化物脉叠加在强硅化蚀变带上形成；e. 7号和8号矿体的矿石特征，由石英和黄铁矿为主的硫化物组成；f. 9号矿体的总体矿化特征，由石英−硫化物叠加在绿泥石化蚀变岩上形成；g. 9号矿体矿石特征，由石英和黄铜矿组成；h. 8号矿体内热液期第3阶段的含黄铜矿石英−硫化物脉穿插第1和2阶段形成的石英−黄铁矿；I. 8号矿体的矿石标本，指示第3阶段的石英−黄铜矿脉穿插第1和第2阶段形成的石英−黄铁矿，导致后者呈角砾产出。stage1～3. 成矿第1～3阶段；Py. 黄铁矿；Qtz. 石英；Chl. 绿泥石；Ccp. 黄铜矿；Sulfide. 硫化物；下同

Figure 4. Surrounding rock and ore characteristics of the Jingchong copper-cobalt deposit in Liuyang city

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图 5 井冲铜钴矿床不同成矿阶段矿物组合特征

a. 花岗质糜棱岩；b. 动力变质作用期形成的细粒黄铁矿（PyⅠ），具有细粒集合体特征，且具有明显的定向变形特征，沿着糜棱岩的糜棱理分布；c. 热液成矿期绿泥石−石英−黄铁矿阶段的绿泥石化和硅化，包含被交代的早期板岩角砾；d. 绿泥石−石英−黄铁矿阶段的粗粒黄铁矿（PyⅡ）包含少量自形−半自形粒状毒砂颗粒，黄铁矿（PyⅡ）被石英−多金属硫化物−碳酸盐阶段的黄铜矿沿裂隙穿插交代；e. 绿泥石−石英−黄铁矿阶段的粗粒黄铁矿（PyⅡ）边缘产出多孔状黄铁矿（PyⅢ-2），其中包含大量石英等透明矿物，且颜色相对于核部（PyⅡ）偏暗，外缘被石英−多金属硫化物−碳酸盐阶段的黄铜矿交代；f. 黄铁矿-辉砷钴矿−石英阶段的自形−半自形粒状微细粒黄铁矿（PyⅢ-1）与辉砷钴矿共生，分布于粗粒黄铁矿（PyⅡ）边缘的石英中；g. 绿泥石−石英−黄铁矿阶段粗粒黄铁矿（PyⅡ）和黄铁矿−辉砷钴矿−石英阶段的辉砷钴矿与石英，可见细粒辉砷钴矿沿半自形粒柱状石英晶体生长环带呈细脉状分布，也可见细粒辉砷钴矿聚集产于粗粒黄铁矿（PyⅡ）边部，以及独立颗粒状辉砷钴矿产于石英中；h. 辉砷钴矿分布于粗粒黄铁矿（PyⅡ）边缘，呈尖角状、镶边状交代粗粒黄铁矿（PyⅡ）；i. 热液期第3阶段石英−黄铜矿脉穿插交代热液期第1阶段粗粒黄铁矿（PyⅡ）；j. 热液期第3阶段黄铜矿−方解石细脉呈“X”状穿插交代早阶段石英和黄铁矿；k. 热液期第3阶段碳酸盐−多金属硫化物−石英阶段金属硫化物沿对称梳状石英脉中心分布（正交偏光）；l. 照片j局部放大（反射光），产于石英中的黄铁矿（PyⅣ）−黄铜矿−闪锌矿−方铅矿共生组合。Py. 黄铁矿；Apy. 毒砂；Cbt. 辉砷钴矿；Sp. 闪锌矿；Po. 磁黄铁矿；Gn. 方铅矿；Rt. 金红石；Pl. 斜长石；Ser. 绢云母；Ab. 钠长石；Cal. 方解石。PyⅢ-1. 辉砷钴矿−石英阶段中的自形细粒黄铁矿；PyⅢ-2. 绿泥石−石英−黄铁矿阶段中的粗粒黄铁矿（PyⅡ）经溶解−再沉淀作用形成的多孔状黄铁矿或富钴环带黄铁矿；Py-Ⅰ. 动力变质作用期形成的细粒黄铁矿；Py-Ⅳ. 产于石英中的黄铁矿；下同

Figure 5. Mineral association of different mineralization stages at the Jingchong copper-cobalt deposit

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图 6 井冲铜钴矿床典型含钴黄铁矿中Co元素μ-XRF扫面结果

a. 大范围粗粒黄铁矿（PyⅡ）集合体，边部的石英中产出细粒的辉砷钴矿；b. 照片a范围的μ-XRF扫面结果，显示黄铁矿（PyⅡ）中出现不均匀分布的富钴环带和不规则状富钴部位；c. 绿泥石−石英−黄铁矿阶段的黄铁矿（PyⅡ）颗粒粗大，结晶形态好，局部受构造应力作用发生破碎呈碎裂状，沿黄铁矿颗粒边缘及破碎裂隙可见明显的多孔状结构；d. 照片c范围的μ-XRF扫面结果，显示Co元素富集于黄铁矿环带中，右下角可见不规则的钴富集部位，图中标注的蓝色线条及圆点为分析剖面I所在位置和分析点位，分析点编号和Co含量分别位于剖面线的左侧和右侧；e. 绿泥石−石英−黄铁矿阶段自形−半自形粒状黄铁矿（PyⅡ）中心为多孔状黄铁矿（PyⅢ-2），含石英等杂质，指示溶解再沉淀作用；f. 照片e范围的μ-XRF扫面结果，显示Co富集于多孔状黄铁矿（PyⅢ-2）的核心，图中标注的蓝色线条及圆点为分析剖面II所在位置和分析点位，分析点编号和Co含量分别位于剖面线的左侧和右侧；g. 绿泥石−石英−黄铁矿阶段，自形−半自形粒状黄铁矿（PyⅡ）集合体呈细小团块状或角砾状，表面干净，无溶解再沉淀作用发生，细小的辉砷钴矿分布于黄铁矿边缘的石英中，或沿石英生长环带呈细脉状分布；h. 照片g范围的μ-XRF扫面结果，黄铁矿（PyⅡ）无明显Co元素异常，细小的辉砷钴矿颗粒分布于石英中，或沿石英结晶生长环带细脉状分布。扫面结果中的富钴部位及辉砷钴矿的面积，均略大于实际面积，这是由μ-XRF扫面最小束径17 μm导致的“马赛克”效应

Figure 6. μ-XRF mapping of Co from typical cobalt-rich pyrite at the Jingchong copper-cobalt deposit

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图 7 井冲铜钴矿床典型辉砷钴矿的BSE照片

a. 黄铁矿−辉砷钴矿的BSE图像，表面洁净的黄铁矿（PyⅡ）内部产出多孔状黄铁矿（PyⅢ-2），包含石英等矿物杂质，指示溶蚀重结晶作用发生，辉砷钴矿沿该多孔状黄铁矿中心的边缘分布；b. 黄铁矿−辉砷钴矿−石英阶段，自形−半自形粒状微细粒黄铁矿（PyⅢ-1）与辉砷钴矿共生，分布于石英中，局部被磁黄铁矿沿其边缘及裂隙交代；c. 微细粒黄铁矿（PyⅢ-1）−辉砷钴矿集合体分布于绿泥石−石英−黄铁矿阶段的粗粒黄铁矿（PyⅡ）边缘的石英中，辉砷钴矿沿粗粒黄铁矿颗粒（PyⅡ）边缘及裂隙呈尖角状交代或镶边状交代，最晚阶段黄铜矿交代粗粒黄铁矿（PyⅡ）及辉砷钴矿，呈包含结构；d. 黄铜矿呈填隙状分布于黄铁矿−辉砷钴矿−石英阶段的石英中，包裹交代细粒辉砷钴矿、细粒黄铁矿（PyⅢ-1）和更早阶段的粗粒黄铁矿（PyⅡ），较粗粒的辉砷钴矿沿着多孔状黄铁矿（PyⅢ-2）边缘分布，细粒辉砷钴矿−黄铁矿（PyⅢ-1）组合在石英的结晶生长环带中定向分布

Figure 7. BSE photos of the representative cobaltite in the Jingchong copper-cobalt deposit

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图 8 粗粒黄铁矿中富Co环带（图6d）的Fe-Co图解(a)及Fe-Co+Ni图解(b)

Figure 8. Fe-Co diagram (a) and Fe-Co+Ni diagram (b) of the Co-rich zone in the coarse-grained pyrite (Fig. 6d)

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表 1 井冲铜钴矿床矿物生成顺序

Table 1. Mineral sequence of the Jingchong copper-cobalt deposit

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表 2 井冲铜钴矿床不同世代及特征的黄铁矿电子探针成分

Table 2. Electron probe data and characteristics of different generations pyrite at the Jingchong copper-cobalt deposit

分析点号	黄铁矿世代	黄铁矿特征	S	Pb	Bi	Ag	Co	Zn	Te	As	Se	Fe	Ni	Cu	总计	分子式
分析点号	黄铁矿世代	黄铁矿特征	w_B/%													分子式
200-D06-2-1-Py1-3	PyⅠ	细粒黄铁矿集合体	53.02	0.00	0.00	0.00	0.09	0.00	0.00	0.01	0.00	45.93	0.01	0.94	100.00	Fe_1.00S_2.01
200-D06-2-1-Py1-4	PyⅠ		53.09	0.00	0.00	0.01	0.10	0.00	0.00	0.14	0.00	46.41	0.00	0.01	99.76	Fe_1.00S_1.99
200-D06-2-1-Py-7	PyⅠ		53.05	0.00	0.00	0.01	0.15	0.01	0.01	0.03	0.00	46.18	0.00	0.32	99.75	Fe_1.00S_2.00
200-D06-2-1-Py-19	PyⅠ		53.29	0.00	0.00	0.01	0.33	0.01	0.00	0.05	0.01	46.22	0.00	0.00	99.93	Fe_1.00S_2.01
50-D06-2-Py-2	PyⅠ		52.57	0.00	0.00	0.03	0.08	0.00	0.01	1.15	0.00	45.38	0.00	0.01	99.24	Fe_1.00S_2.02
50-D06-2-Py-5	PyⅠ		52.69	0.00	0.00	0.00	0.26	0.00	0.00	1.01	0.00	45.92	0.03	0.01	99.91	Fe_1.00S_2.00
50-D06-2-Py-10	PyⅠ		53.22	0.00	0.00	0.00	0.15	0.00	0.00	0.12	0.00	46.07	0.00	0.00	99.56	Fe_1.00S_2.01
0-D03-1-Py-1	PyⅡ	普通粗粒	53.53	0.00	0.00	0.01	0.17	0.00	0.06	0.08	0.00	46.50	0.00	0.00	100.34	Fe_1.00S_2.00
0-D03-1-Py-2	PyⅡ		53.70	0.00	0.00	0.01	0.11	0.00	0.00	0.00	0.00	46.38	0.00	0.00	100.20	Fe_1.00S_2.02
0-D03-1-Py-3	PyⅡ		53.17	0.00	0.00	0.00	0.15	0.00	0.02	0.12	0.02	46.42	0.00	0.02	99.92	Fe_1.00S_1.99
0-D03-1-Py-4	PyⅡ		53.56	0.00	0.00	0.00	0.60	0.01	0.01	0.00	0.03	46.07	0.00	0.00	100.28	Fe_1.00S_2.02
0-D03-1-Py-5	PyⅡ		53.16	0.00	0.00	0.01	0.10	0.00	0.00	0.59	0.01	46.21	0.00	0.00	100.08	Fe_1.00S_2.00
0-D03-1-Py-25	PyⅡ	碎裂状粗粒，无重结晶	53.25	0.00	0.00	0.00	0.08	0.00	0.00	0.19	0.00	46.44	0.00	0.01	99.96	Fe_1.00S_2.00
0-D03-1-Py-26	PyⅡ		53.13	0.00	0.00	0.00	0.16	0.00	0.01	0.75	0.00	46.10	0.02	0.00	100.16	Fe_1.00S_2.01
0-D03-1-Py-27	PyⅡ		52.53	0.00	0.00	0.00	0.07	0.00	0.00	1.52	0.00	46.10	0.00	0.00	100.21	Fe_1.00S_1.98
0-D03-1-Py-28	PyⅡ		53.73	0.00	0.00	0.00	0.08	0.00	0.00	0.02	0.01	46.59	0.00	0.02	100.44	Fe_1.00S_2.01
0-D03-1-Py-29	PyⅡ		53.46	0.00	0.00	0.00	0.14	0.00	0.00	0.12	0.00	46.27	0.00	0.02	100.01	Fe_1.00S_2.01
0-D03-1-Py-30	PyⅡ		52.11	0.00	0.00	0.00	0.08	0.00	0.00	2.46	0.00	46.08	0.00	0.00	100.73	Fe_1.00S_1.97
200-D06-2-1-Py-1	PyⅡ	粗粒，重结晶	53.18	0.00	0.00	0.00	0.07	0.03	0.02	0.01	0.01	46.24	0.00	0.02	99.56	Fe_1.00S_2.00
200-D06-2-1-Py-2	PyⅡ		53.33	0.01	0.00	0.01	0.08	0.01	0.00	0.01	0.00	46.49	0.01	0.03	99.98	Fe_1.00S_2.00
200-D06-2-1-Py-5	PyⅡ		51.44	0.00	0.00	0.00	0.08	0.00	0.03	2.78	0.00	45.82	0.00	0.00	100.14	Fe_1.00S_1.96
200-D06-2-1-Py-4	PyⅡ		52.72	0.00	0.00	0.00	0.11	0.00	0.00	0.07	0.01	45.56	0.00	0.90	99.37	Fe_1.00S_2.01
200-D06-2-1-Py-8	PyⅡ		52.38	0.00	0.00	0.00	0.07	0.00	0.00	1.36	0.00	46.05	0.00	0.00	99.86	Fe_1.00S_1.98
200-D06-2-1-Py-9	PyⅡ		51.11	0.00	0.00	0.02	0.07	0.00	0.00	3.22	0.00	45.41	0.03	0.01	99.87	Fe_1.00S_1.96
-150-D2-Py-16	PyⅡ	剖面Ⅰ-1，粗粒黄铁矿	53.53	0.00	0.00	0.00	0.11	0.00	0.00	0.00	0.03	46.53	0.00	0.00	100.20	Fe_1.00S_2.00
-150-D2-Py-15	PyⅡ	剖面Ⅰ-2，粗粒黄铁矿	53.00	0.00	0.00	0.01	0.09	0.00	0.00	0.43	0.03	46.62	0.00	0.00	100.18	Fe_1.00S_1.98
-50-D7-Py-13	PyⅡ	剖面Ⅱ-1，粗粒黄铁矿	52.89	0.00	0.00	0.00	0.10	0.00	0.00	0.01	0.00	45.09	0.00	0.00	98.09	Fe_1.00S_2.04
-50-D7-Py-14	PyⅡ	剖面Ⅱ-2，粗粒黄铁矿	52.87	0.00	0.00	0.01	0.12	0.00	0.04	0.00	0.00	45.46	0.00	0.00	98.51	Fe_1.00S_2.03
0-D03-1-Py-6	PyⅢ-1	辉砷钴矿共生细粒黄铁矿	52.17	0.00	0.00	0.00	0.11	0.01	0.00	1.82	0.00	45.73	0.00	0.02	99.86	Fe_1.00S_1.99
0-D03-1-Py-7	PyⅢ-1		53.38	0.00	0.00	0.03	0.32	0.02	0.00	0.50	0.00	46.06	0.00	0.00	100.30	Fe_1.00S_2.02
0-D03-1-Py-8	PyⅢ-1		52.09	0.00	0.00	0.03	0.08	0.00	0.00	2.15	0.00	45.75	0.00	0.00	100.10	Fe_1.00S_1.98
0-D03-1-Py-9	PyⅢ-1		53.57	0.00	0.00	0.00	0.08	0.00	0.04	0.00	0.00	46.55	0.02	0.00	100.26	Fe_1.00S_2.00
0-D03-1-Py-10	PyⅢ-1		53.54	0.01	0.00	0.00	0.13	0.00	0.00	0.00	0.04	46.20	0.01	0.02	99.95	Fe_1.00S_2.02
0-D03-1-Py-11	PyⅢ-1		53.45	0.00	0.00	0.01	0.65	0.00	0.00	0.00	0.01	46.00	0.00	0.00	100.11	Fe_1.00S_2.02
0-D03-1-Py-12	PyⅢ-1		51.40	0.00	0.00	0.00	0.09	0.00	0.01	3.37	0.00	45.79	0.00	0.00	100.65	Fe_1.00S_1.96
0-D03-1-Py-13	PyⅢ-1		53.26	0.00	0.00	0.00	0.19	0.00	0.02	0.00	0.02	46.44	0.00	0.01	99.94	Fe_1.00S_2.00
0-D03-1-Py-14	PyⅢ-1		53.69	0.00	0.00	0.01	0.16	0.00	0.00	0.01	0.02	46.00	0.00	0.00	99.89	Fe_1.00S_2.03
0-D03-1-Py-15	PyⅢ-1		53.56	0.00	0.00	0.02	0.13	0.00	0.00	0.00	0.03	46.69	0.01	0.01	100.44	Fe_1.00S_2.00
0-D03-1-Py-16	PyⅢ-1		52.00	0.00	0.00	0.02	0.16	0.00	0.04	2.30	0.00	45.95	0.01	0.00	100.48	Fe_1.00S_1.97
0-D03-1-Py-17	PyⅢ-1		53.76	0.00	0.00	0.01	0.12	0.01	0.02	0.03	0.00	46.59	0.00	0.00	100.54	Fe_1.00S_2.01
0-D03-1-Py-18	PyⅢ-1		51.08	0.00	0.00	0.00	0.37	0.02	0.01	3.67	0.00	45.19	0.01	0.02	100.35	Fe_1.00S_1.97
-150-D2-Py-14	PyⅢ-2	剖面Ⅰ-3，富钴环带黄铁矿	53.34	0.00	0.00	0.00	1.01	0.00	0.01	0.02	0.04	45.67	0.04	0.00	100.11	Fe_1.00S_2.03
-150-D2-Py-13	PyⅢ-2	剖面Ⅰ-4，富钴环带黄铁矿	53.60	0.00	0.00	0.00	0.28	0.00	0.00	0.00	0.01	46.39	0.02	0.00	100.30	Fe_1.00S_2.01
-150-D2-Py-12	PyⅢ-2	剖面Ⅰ-5，富钴环带黄铁矿	53.59	0.00	0.00	0.00	3.52	0.00	0.05	0.01	0.02	43.60	0.00	0.00	100.78	Fe_1.00S_2.14
-150-D2-Py-11	PyⅢ-2	剖面Ⅰ-6，富钴环带黄铁矿	53.87	0.00	0.00	0.00	0.16	0.00	0.00	0.03	0.00	45.46	1.18	0.09	100.79	Fe_1.00S_2.06
-50-D7-Py-15	PyⅢ-2	剖面Ⅱ-3，多孔状黄铁矿	52.98	0.00	0.00	0.01	1.53	0.00	0.00	0.35	0.00	44.82	0.00	0.38	100.08	Fe_1.00S_2.06
-50-D7-Py-16	PyⅢ-2	剖面Ⅱ-4，多孔状黄铁矿	52.77	0.00	0.00	0.01	0.44	0.00	0.00	0.00	0.00	45.26	0.02	0.00	98.48	Fe_1.00S_2.03
-50-D7-Py-20	PyⅢ-2	剖面Ⅱ-5，多孔状黄铁矿	52.88	0.00	0.00	0.02	0.15	0.01	0.01	0.01	0.04	45.11	0.00	0.00	98.23	Fe_1.00S_2.04
sph-1-1-Py-12	PyⅣ	多金属硫化阶段黄铁矿	53.15	0.00	0.00	0.00	0.07	0.03	0.02	0.79	0.00	46.22	0.00	0.02	100.29	Fe_1.00S_2.00
sph-1-1-Py-13	PyⅣ		53.34	0.00	0.00	0.00	0.10	0.04	0.00	0.61	0.00	46.31	0.00	0.01	100.42	Fe_1.00S_2.01
sph-1-1-Py-14	PyⅣ		53.45	0.00	0.00	0.00	0.21	0.27	0.00	0.50	0.00	46.07	0.10	0.00	100.61	Fe_1.00S_2.02
sph-1-1-Py-15	PyⅣ		52.82	0.00	0.00	0.00	0.09	0.07	0.03	1.66	0.00	46.18	0.00	0.01	100.85	Fe_1.00S_1.99
注：分子式计算均以Fe原子数为1进行了标准化。

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表 3 井冲铜钴矿床毒砂电子探针成分

Table 3. Electron probe composition of arsenopyrite at the Jingchong copper-cobalt deposit

分析点号	S	Pb	Bi	Ag	Co	Zn	Te	As	Se	Fe	Ni	Cu	总计	分子式
分析点号	w_B/%													分子式
50-D06-2-Apy-1	21.12	0.04	0.30	0.00	0.08	0.00	0.00	43.14	0.00	34.20	0.00	0.01	98.89	Fe_1.00As_0.94S_1.08
50-D06-2-Apy-2	20.82	0.00	0.00	0.01	0.09	0.00	0.00	43.63	0.00	34.19	0.00	0.02	98.76	Fe_1.00As_0.95S_1.06
50-D06-2-Apy-3	20.98	0.10	0.00	0.00	1.95	0.00	0.00	43.86	0.00	32.46	0.28	0.02	99.65	Fe_1.00As_1.01S_1.13
50-D06-2-Apy-4	21.75	0.00	0.00	0.00	0.12	0.00	0.00	42.35	0.00	34.43	0.00	0.00	98.65	Fe_1.00As_0.92S_1.10
50-D02-Apy-1	20.09	0.00	0.00	0.01	0.09	0.01	0.00	46.86	0.00	33.77	0.00	0.06	100.89	Fe_1.00As_1.03S_1.04
50-D02-Apy-2	21.46	0.01	0.00	0.00	0.08	0.00	0.00	44.06	0.00	34.14	0.00	0.00	99.74	Fe_1.00As_0.96S_1.09
50-D02-Apy-3	22.80	0.02	0.00	0.03	0.09	0.02	0.03	42.88	0.00	34.71	0.00	0.02	100.60	Fe_1.00As_0.92S_1.14
50-D02-Apy-4	19.69	0.06	0.00	0.00	0.10	0.00	0.00	46.88	0.00	34.11	0.00	0.00	100.85	Fe_1.00As_1.02S_1.01
注：分子式计算均以Fe原子数为1进行了标准化。

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表 4 浏阳井冲铜钴矿床辉砷钴矿电子探针成分

Table 4. Electron probe composition of cobaltite at the Jingchong copper-cobalt deposit in Liuyang City

分析点号	S	Pb	Bi	Ag	Co	Zn	Te	As	Se	Fe	Ni	Cu	总计	分子式
分析点号	w_B/%													分子式
100-D011-Co-2	20.64	0.00	0.00	0.00	36.01	0.00	0.00	40.82	0.24	0.95	0.20	0.00	98.86	Co_1.00Fe_0.03As_0.89S_1.05
100-D011-Co-3	20.17	0.00	0.00	0.00	33.79	0.00	0.04	41.08	0.24	2.84	0.15	0.00	98.32	Co_1.00Fe_0.09As_0.96S_1.10
100-D011-Co-5	19.92	0.00	0.00	0.01	34.53	0.00	0.02	41.23	0.21	2.04	0.16	0.00	98.11	Co_1.00Fe_0.06As_0.94S_1.06
0-D03-1-Co-8	18.37	0.00	0.00	0.00	31.70	0.00	0.00	43.78	0.21	1.67	2.44	0.00	98.18	Co_1.00Fe_0.06As_1.09S_1.07
50-D03-2-Co-1	19.27	0.00	0.00	0.00	33.22	0.00	0.01	43.65	0.26	2.03	0.06	0.00	98.50	Co_1.00Fe_0.06As_1.03S_1.07
200-D06-2-1-Co-4	20.64	0.00	0.41	0.02	32.66	0.02	0.05	42.61	0.16	2.55	0.64	0.00	99.74	Co_1.00Fe_0.08As_1.03S_1.16
200-D06-2-1-Co-5	20.85	0.00	0.00	0.00	30.52	0.00	0.01	41.71	0.21	4.74	0.49	0.00	98.53	Co_1.00Fe_0.03As_0.89S_1.12
200-D06-2-1-Co-6	20.46	0.00	0.00	0.00	32.58	0.00	0.00	42.32	0.24	3.19	0.32	0.00	99.11	Co_1.00Fe_0.03As_0.89S_1.13
200-D06-2-1-Co-7	20.65	0.02	0.00	0.00	31.39	0.00	0.00	42.19	0.22	5.51	0.16	0.00	100.15	Co_1.00Fe_0.03As_0.89S_1.14
注：分子式计算均以Co原子数为1进行了标准化。

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表 5 浏阳井冲铜钴矿床黄铜矿电子探针成分

Table 5. Electron probe composition of chalcopyrite at the Jingchong copper-cobalt deposit in Liuyang City

分析点号	S	Pb	Bi	Ag	Co	Zn	Te	As	Se	Fe	Ni	Cu	总计	分子式
分析点号	w_B/%													分子式
0-D07-1-Ccp-2	33.46	0.00	0.00	0.00	0.00	0.01	0.00	0.02	0.00	30.43	0.00	34.36	98.27	Cu_1.00Fe_1.01S_1.93
0-D07-1-Ccp-3	33.87	0.01	0.00	0.00	0.00	0.01	0.00	0.00	0.00	30.35	0.00	34.47	98.71	Cu_1.00Fe_1.00S_1.95
0-D07-1-Ccp-4	33.93	0.00	0.00	0.03	0.00	0.02	0.00	0.00	0.00	30.40	0.00	34.43	98.81	Cu_1.00Fe_1.00S_1.95
0-D03-1-Ccp-1	34.23	0.01	0.00	0.01	0.00	0.02	0.00	0.00	0.00	30.35	0.00	34.70	99.30	Cu_1.00Fe_1.00S_1.95
0-D03-1-Ccp-2	33.45	0.06	0.00	0.00	0.00	0.03	0.00	0.00	0.02	30.01	0.00	34.83	98.40	Cu_1.00Fe_0.98S_1.90
50-D03-2-Ccp-1	34.06	0.04	0.00	0.02	0.00	0.03	0.05	0.03	0.00	30.04	0.02	34.39	98.67	Cu_1.00Fe_0.99S_1.96
-100-D5-2-Ccp-1	33.97	0.06	0.00	0.05	0.04	0.02	0.04	0.01	0.04	30.55	0.00	34.68	99.43	Cu_1.00Fe_1.00S_1.94
-100-D5-2-Ccp-2	34.08	0.00	0.00	0.00	0.00	0.01	0.00	0.03	0.05	30.33	0.00	34.83	99.33	Cu_1.00Fe_0.99S_1.94
注：分子式计算均以Cu原子数为1进行了标准化。

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