青海省玛多县夺儿贡玛地区地球化学特征与找矿方向

马庆; 王元伟; 高永宝; 刘明

doi:10.12401/j.nwg.2023018

青海省玛多县夺儿贡玛地区地球化学特征与找矿方向

1.
中国地质调查局金矿勘查技术创新中心，陕西西安　710000

2.
中国地质调查局西安矿产资源调查中心，陕西西安　710000

基金项目: 中国地质调查局项目“新疆若羌县帕夏拉依档一带萤石、锂矿产调查评价”（DD20243309）、“阿尔金伊里奇曼−红柳沟地区萤石、金铜矿产调查评价”（DD20211551）联合资助。

详细信息

作者简介: 马庆（1987−），男，硕士，主要从事矿产地质勘查工作。E−mail：275615761@qq.com

通讯作者: 王元伟（1991−），男，硕士，主要从事地质矿产工作。E−mail：1036944931@qq.com。

中图分类号: P632

收稿日期: 2021-11-06

修回日期: 2022-10-08

刊出日期: 2025-02-20

Geochemical Characteristics and Prospecting Direction of Duoergongma Area, Maduo County, Qinghai Province

1.
Technology Innovation Center for Gold Mine Exploration, China Geological Survey, Xi’an 710100, Shaanxi, China

2.
Xi’an Center of Mineral Resources Survey, China Geological Survey, Xi’an 710000, Shaanxi, China

More Information

Corresponding author: WANG Yuanwei, 1036944931@qq.com

Received Date: 06 November 2021

Revised Date: 08 October 2022

Publish Date: 20 February 2025

摘要

摘要:
为查明受断层破碎带控制的夺儿贡玛矿区下一步找矿方向，在矿区采用土壤地球化学测量、1∶1 万综合剖面测量与槽探等验证方法，并对元素分布、元素相关性、元素异常等特征进行研究。研究发现：①Sb、Au为本区成矿潜力大的优势成矿元素，As、Cu、Pb、Zn、 Ag为与Sb、Au矿化关系密切的重要找矿指示元素。②新发现4处蚀变岩型破碎蚀变脉，圈定了3条锑工业矿体。③初步查明本区主要为破碎蚀变岩型锑金矿床，受断层破碎带控制。结合矿区所处成矿条件和异常发育情况，建议在外围开展1∶1万土壤测量，扩大找矿成果。
- 玛多县夺尔贡玛 /
- 地球化学 /
- 金锑矿床 /
- 找矿方向
Abstract:
For purpose of find out the metallogenic regularity of the broken and altered deposit in Duoergongma area, which is controlled by fault fracture zone, verification methods were adopted, such as soil geochemical survey, 1∶10 000 comprehensive profile survey and trough exploration, and studied the characteristics of element distribution, element correlation and element anomaly. ① Sb and Au are the dominant ore-forming elements with great metallogenic potential, and As, Cu, Pb, Zn, Ag are the important ore-prospecting indicator elements closely related to Sb and Au mineralization. ② Four broken alteration veins of altered rock type have been discovered, and three antimony industrial orebodies have been delineated. ③ It is preliminarily identified that this area is mainly a broken alteration rock type antimony-gold deposit controlled by fault fracture zone. Combined with the metallogenic conditions and abnormal development of the mining area, it is suggested to carry out 1∶10,000 soil survey in the periphery to expand the prospecting results.
- Duergongma /
- geochemistry /
- gold mine /
- antimony

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图 1 矿区地质简图

Figure 1.

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图 2 矿区1∶5万水系沉积物测量综合异常图

Figure 2.

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图 3 土壤地球化学测量数据对数分布图（样本数：2742件）

Figure 3.

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图 4 土壤样品元素R型聚类分析谱系图

Figure 4.

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图 5 矿区1∶1万土壤地球化学测量综合异常及工程布置简图

Figure 5.

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图 6 矿区1∶1万土壤地球化学测量HT1异常剖析图

Figure 6.

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图 7 VIII1号锑矿体资源量估算垂直纵投影图

Figure 7.

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表 1 土壤地球化学测量数据统计

Table 1. Statistics of soil geochemical measurements

元素	最大值（C_max）	最小值（C_min）	背景值（Ca）	标准离差（S）	变化系数（Cv）	异常下限（T）	富集系数（Ca/克拉克值）
Au	30.06	0.31	1.4	1.24	0.88	2	0.35
Ag	530	26.3	58.3	22.9	0.39	85	0.78
As	100	6.6	21.6	5.34	0.25	30	12.00
Cu	393.7	6.62	28.2	8.35	0.29	35	0.47
Pb	67.7	4.6	21.3	3.6	0.16	27	1.52
Sb	50	1.1	4.5	5.8	1.29	5.5	22.50
Zn	270.9	19.9	79.5	14.8	0.18	95	1.14
注：2742件样品，Au、Ag含量为10⁻⁹，其他元素含量为10⁻⁶。

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