蒙古国那仁陶勒盖金矿床原生晕特征及深部预测

吴涛涛; 金鑫; 王庆双; 姚远; 鲍庆中; 周永恒; 柴璐

doi:10.13686/j.cnki.dzyzy.2022.03.010

蒙古国那仁陶勒盖金矿床原生晕特征及深部预测

中国地质调查局沈阳地质调查中心, 辽宁沈阳 110034

基金项目:
中国地质调查局项目"中蒙俄毗邻区大型铀、铜资源基地评价"(编号DD20190438)、"东北亚欧洲国际合作地质调查"(编号DD20221806)

详细信息

作者简介: 吴涛涛(1988-), 男, 硕士, 高级工程师, 主要从事境外矿产调查与综合研究.通信地址辽宁省沈阳市皇姑区黄河北大街280号, E-mail//553583730@qq.com

通讯作者: 金鑫(1982-), 女, 朝鲜族, 硕士, 工程师, 主要从事境外地质矿产综合研究与管理工作, 通信地址辽宁省沈阳市皇姑区黄河北大街280号, E-mail//211477446@qq.com

中图分类号: P618.51

收稿日期: 2022-03-17

修回日期: 2022-05-06

刊出日期: 2022-06-25

PRIMARY HALO CHARACTERISTICS AND DEEP PROSPECTING PREDICTION OF NARAN TOLGOI GOLD DEPOSIT IN MONGOLIA

Shenyang Center of China Geological Survey, Shenyang 110034, China

More Information

Corresponding author: JIN Xin, 211477446@qq.com

Received Date: 17 March 2022

Revised Date: 06 May 2022

Publish Date: 25 June 2022

摘要

摘要:
为预测和评价那仁陶勒盖金矿的成矿潜力，运用多元统计方法，结合地球化学各参数信息，对那仁陶勒盖金矿原生晕进行系统研究.结果显示: 那仁陶勒盖金矿赋矿花岗闪长岩中Au、Ag、Bi等元素浓集克拉克值明显偏高，与那仁陶勒盖金成矿作用关系密切; 矿石中Au与Sb、Cu、Pb、Ag、Hg、Zn、As、Bi等关系最为密切; 矿体原生晕轴向分带序列出现尾晕元素W、Sn等与前缘晕元素As叠加的现象，同时(As+Sb)/(Bi+Mo)、100Sb/(Bi·Mo)等分带性指数出现转折，指示深部存在盲矿体.依据上述矿体原生晕特征，建立矿体叠加晕预测模型，预测盲矿体赋存位置在海拔710m以下的岩体与地层接触带附近.
- 原生晕 /
- 轴向分带 /
- 隐伏矿体 /
- 那仁陶勒盖金矿 /
- 蒙古国
Abstract:
To predict and evaluate the metallogenic potential, the primary halo of Naran Tolgoi gold deposit is systematically studied by using multivariate statistical method combined with geochemical parameter information. The results show that the Clarke values of Au, Ag and Bi in the host rock granodiorite of the deposit are obviously high, which is closely related to the gold mineralization. Au is most closely correlated to Sb, Cu, Pb, Ag, Hg, Zn, As and Bi in the ores. There exists the superposition of rear halo elements(W and Sn) with front halo element(As) in the axial zoning sequence of primary halo. Besides, the turning of zonation indexes such as(As+Sb)/(Bi+Mo) and 100Sb/(Bi·Mo) indicates the existence of blind orebody in the deep. Based on the characteristics of primary halo, the prediction model of superimposed halo is established that the blind orebody is probably located near the contact zone between rock mass and strata below 710 m altitude.
- primary halo /
- axial zoning /
- concealed orebody /
- Naran Tolgoi gold deposit /
- Mongolia

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图 1 那仁陶勒盖金矿大地构造位置及矿区地质图（据文献[8]）

Figure 1.

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图 2 那仁陶勒盖金矿11号勘探线剖面图及原生晕采样位置示意图

Figure 2.

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图 3 那仁陶勒盖金矿样品聚类分析谱系图

Figure 3.

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图 4 那仁陶勒盖金矿①号矿体11号勘探线微量元素轴向变化曲线图

Figure 4.

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图 5 那仁陶勒盖金矿①号矿体叠加晕预测模型

Figure 5.

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表 1 那仁陶勒盖金矿围岩中指示元素含量特征

Table 1. Contents of indicator elements in the wall rock of Naran Tolgoi gold deposit

元素	花岗闪长岩（4件）		变质沉积岩（8件）		全部样品（12件）		地壳克拉克值
元素	几何平均值	浓集克拉克值	几何平均值	浓集克拉克值	几何平均值	浓集克拉克值	地壳克拉克值
Au	55.70	13.93	30.18	7.54	38.68	9.67	4
Ag	0.56	6.97	0.22	2.78	0.33	4.18	0.08
Bi	0.05	11.88	0.26	65.00	0.19	47.29	0.004
Cu	67.13	1.07	38.19	0.61	47.83	0.76	63
Zn	56.45	0.60	106.36	1.13	89.73	0.95	94
Pb	22.18	1.85	27.01	2.25	25.40	2.12	12
W	5.88	5.35	5.03	4.57	5.31	4.83	1.1
Mo	0.57	0.43	2.40	1.85	1.79	1.38	1.3
Sn	1.10	0.65	2.27	1.34	1.88	1.11	1.7
Sb	0.38	0.63	0.44	0.73	0.42	0.69	0.6
Hg	15.38	0.19	10.41	0.13	12.07	0.15	80
As	3.98	1.81	3.68	1.67	3.78	1.72	2.2
Co	6.70	0.27	20.41	0.82	15.84	0.63	25
Ni	17.85	0.20	53.21	0.60	41.43	0.47	89
Nb	3.85	0.20	10.64	0.56	8.38	0.44	19
Ta	0.35	0.22	0.72	0.45	0.60	0.37	1.6
Li	10.50	0.50	30.64	1.46	23.93	1.14	21
Cs	3.80	2.71	5.53	3.95	4.95	3.54	1.4
Mn	463.25	0.36	870.00	0.67	734.42	0.56	1300
①含量单位：Au、Hg为10^－9，其余元素均为10^－6；②浓集克拉克值＝几何平均值/地壳克拉克值，其中克拉克值引自文献[13].

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表 2 那仁陶勒盖金矿不同中段微量元素含量

Table 2. Contents of trace elements in Naran Tolgoi gold deposit at different elevations

样品编号	NR3-2-4	NR3-3-3	NR3-4-4	NR3-5-1	YH003
标高/m	1064	1010	964	910	873
样品长度/m	1	0.95	0.95	0.4	0.7
Cu	137.6	1254.1	124.9	401.1	344.6
Zn	83.3	12800	137.1	486.1	289.9
Pb	63.2	13300	480.5	147.8	708.4
W	0.72	1.44	0.43	0.53	3.32
Mo	1.5	5.26	1.69	1.87	2.85
Ag	23.396	227.776	13.528	6.553	16.206
Sn	0.29	0.64	0.36	0.25	0.41
Bi	0.02	19.15	1.04	0.71	5.66
Sb	1.05	6.33	1.11	1.48	3
Hg	12.2	411.5	15.6	49	39.6
As	8.1	14.3	10	45.4	31.8
Au	17260	18490	6060	7020	8160
Co	1.6	3.9	1.4	1.4	3.2
Ni	8	20.7	7.7	9.2	19.4
Nb	0.3	0.3	0.4	0.2	0.3
Ta	0.02	0.02	0.02	0.02	0.03
Li	3.2	2.6	4.8	2.6	26.6
Cs	0.5	1.9	0.9	1	14.2
Mn	113	200	263	121	200
含量单位：10^－6.

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