东昆仑茫崖河东地区地球化学钴异常与含矿地质体的响应

doi:10.11720/wtyht.2024.0031

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Abstract

Over recent years, large-scale geochemical surveys on a scale of 1:25,000 have been conducted in the eastern Kunlun region for geological prospecting. These surveys, characterized by the rapid and accurate location of anomaly sources, have been widely applied in mineral explorations, yielding encouraging mineral prospecting results. Using 1:25,000-scale stream sediment surveys, this study delineated 12 geochemical integrated anomalies of the element associations of Cu, Co, and Ni in the Hedong area, Mangya City, eastern Kunlun. These anomalies include one integrated anomaly dominated by Co, where various element anomalies exhibit high-degree overlap, relatively large scales, high intensity, and distinct concentration zoning. The Co anomaly is closely associated with the Ordovician Qimantag Group, demonstrating a high degree of spatial consistency. The subsequent anomaly verification reveals four cobalt mineralized zones within anomalies GA16, GA26, GA11, and GA39, with three ore bodies and multiple mineralized bodies of cobalt being identified within the mineralized zones. The comprehensive analysis indicates that the eastern Kunlun region enjoys excellent metallogenic geological conditions and favorable geochemical characteristics, with promising prospecting results having been achieved. Therefore, this region has the prospecting potential of medium to large-scale cobalt deposits.

Key words： cobalt anomaly Qimantag Group prospecting prospects Hedong area of Mangya City eastern Kunlun

Received: 22 January 2024 Published: 21 October 2024

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	Articles by authors
	Wen-Jun MA
	Hai-Lin XIE
	Wei GUO
	Fei-Fei LI
	Xiao-Yan TENG
	Su-Liong CHEN
	Shao-Nan LI
	Xiu-Feng LIU
	Zhong-Ying MA
	Hai-Yun MA

Cite this article:

Wen-Jun MA,Hai-Lin XIE,Wei GUO, et al. Response of the geochemical anomalies of cobalt to ore-bearing geological bodies in the Mangyahedong area, eastern Kunlun[J]. Geophysical and Geochemical Exploration, 2024, 48(5): 1232-1246.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2024.0031 OR https://www.wutanyuhuatan.com/EN/Y2024/V48/I5/1232

12](a)and geological sketch map(b)of Mangyahedong area
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Geotectonic location^[12](a)and geological sketch map(b)of Mangyahedong area

Distribution of 1:200,000 geochemical anomaly of Mangyahedong area

Geochemical anomaly distribution of 1:50,000 stream sediment in Mangyahedong area

Geochemical anomaly distribution of 1:50,000 mineral geochemical survey in Mangyahedong area

Comprehensive abnormal eigenvalue statistics of AS^28-3 CuCoNi(AgZnPbSnAu)

Comprehensiv anomaly anatomy diagram of AS^28-3CuCoNi(AgZnPbSnAu)

Geochemical variable statistics of Cu、Co、Cr、Ni elements

R-type cluster analysis pedigree of stream sediments elements

Characteristic roots and structural formulas of major factors

Factor measurement chart of Cu、Co、Cr、Ni

Changes in the content of Cu、Co、Cr、Ni in different geological bodies

Distribution characteristics of Co、Cr、Cu、Ni in different geological bodies in Mayahedong area

Distribution map of Co element abnormal

异常编号	异常点数	异常下限	异常面积	排序	平均值	排序	极大值	排序	衬度	排序	AD	排序	AP	排序	NAD	排序	NAP	排序	分带区
Co-1	61	40.00	2.59	6	49.00	12	61.00	10	1.23	12	507.41	7	93.20	5	12.69	7	2.33	5	1
Co-2	24	40.00	0.78	12	50.15	10	58.30	13	1.25	10	157.36	12	31.86	9	3.93	12	0.80	9	1
Co-3	7	40.00	0.24	17	45.10	30	53.30	20	1.13	30	43.76	19	4.95	22	1.09	19	0.12	22	1
Co-4	3	40.00	0.10	24	45.73	27	49.00	28	1.14	27	19.07	24	2.39	28	0.48	24	0.06	28	1
Co-5	3	40.00	0.19	20	61.07	4	81.90	6	1.53	4	46.17	17	15.93	15	1.15	17	0.40	15	2
Co-6	58	40.00	3.04	5	47.03	21	55.10	17	1.18	21	571.31	5	85.43	6	14.28	5	2.14	6	1
Co-7	3	40.00	0.104	25	45.40	29	49.80	26	1.14	29	17.49	26	2.08	30	0.44	26	0.05	30	1
Co-8	113	40.00	4.60	2	53.69	7	81.90	5	1.34	7	987.16	2	251.65	2	24.68	2	6.29	2	2
Co-9	3	40.00	0.16	21	46.13	26	48.90	30	1.15	26	29.97	22	3.99	24	0.75	22	0.10	24	1
Co-10	26	40.00	1.11	10	45.71	28	60.20	11	1.14	28	202.60	10	25.30	12	5.07	10	0.63	12	1
Co-11	68	40.00	3.54	3	48.11	16	59.90	12	1.20	16	682.07	3	115.03	4	17.05	3	2.88	4	1
Co-12	2	40.00	0.08	29	44.30	31	45.00	31	1.11	31	13.76	30	1.34	31	0.34	30	0.03	31	1
Co-13	5	40.00	0.20	19	48.76	13	57.20	15	1.22	13	39.25	21	7.05	19	0.98	21	0.18	19	1
Co-14	10	40.00	0.34	15	47.65	18	55.80	16	1.19	18	64.12	15	10.29	18	1.60	15	0.26	18	1
Co-15	6	40.00	0.28	16	46.15	25	50.00	25	1.15	25	51.51	16	6.86	20	1.29	16	0.17	20	1
Co-16	22	40.00	1.20	9	46.35	24	57.80	14	1.16	24	223.43	9	30.61	10	5.59	9	0.77	10	1
Co-17	11	40.00	0.83	11	48.69	14	54.10	18	1.22	14	160.96	11	28.73	11	4.02	11	0.72	11	1
Co-18	42	40.00	2.12	7	61.20	3	527.00	1	1.53	3	519.93	6	180.11	3	13.00	6	4.50	3	3
Co-19	26	40.00	1.29	8	49.55	11	89.30	3	1.24	11	254.84	8	49.12	8	6.37	8	1.23	8	2
Co-20	3	40.00	0.12	22	47.10	20	49.00	29	1.18	20	21.90	23	3.30	26	0.55	23	0.08	26	1
Co-21	13	40.00	0.63	13	47.67	17	53.10	21	1.19	17	120.90	13	19.45	14	3.02	13	0.49	14	1
Co-22	2	40.00	0.08	27	46.40	23	51.70	23	1.16	23	15.17	29	2.09	29	0.38	29	0.05	29	1
Co-23	65	40.00	3.16	4	46.64	22	53.40	19	1.17	22	588.95	4	83.85	7	14.72	4	2.10	7	1
Co-24	5	40.00	0.20	18	55.92	6	78.10	8	1.40	6	45.42	18	12.93	17	1.14	18	0.32	17	1
Co-25	2	40.00	0.08	28	48.15	15	49.10	27	1.20	15	15.69	27	2.66	27	0.39	27	0.07	27	1
Co-26	2	40.00	0.06	30	60.60	5	72.20	9	1.52	5	15.21	28	5.17	21	0.38	28	0.13	21	1
Co-27	2	40.00	0.11	23	94.35	1	107.00	2	2.36	1	42.94	20	24.73	13	1.07	20	0.62	13	2
Co-28	1	40.00	0.02	31	88.90	2	88.90	4	2.22	2	8.33	31	4.58	23	0.21	31	0.11	23	2
Co-29	2	40.00	0.09	26	50.55	9	53.00	22	1.26	9	18.14	25	3.79	25	0.45	25	0.09	25	1
Co-30	120	40.00	6.08	1	53.54	8	81.40	7	1.34	8	1301.69	1	329.25	1	32.54	1	8.23	1	2
Co-31	6	40.00	0.50	14	47.15	19	50.70	24	1.18	19	93.57	14	14.19	16	2.34	14	0.35	16	1

Co abnormal characteristics in Mangyahedong area

GA 甲 2 26Co
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Comprehensiv anomaly anatomy diagram of $GA 甲 2 26$ Co

GA 甲 2 16Cu
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Comprehensiv anomaly anatomy diagram of $GA 甲 2 16$ Cu

Field characteristics of No.Ⅰcobalt-copper mineralization belt

Field characteristics of No.Ⅶ cobalt-nickel mineralization belt

Sampling plan of No.VII cobalt-nickel mineralization belt

Characteristics of cobalt ore under SEM

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