新疆普鲁火山岩带岩石化学特征及含矿性分析

现代矿业 ›› 2025, Vol. 41 ›› Issue (12): 174-181.

新疆普鲁火山岩带岩石化学特征及含矿性分析

刘宁¹刘瑞年^1，2，3

1. 河北华勘资环勘测有限公司；2. 河北省地质资源勘探开发与生态保护重点实验室； 3. 华北地质勘查局五一四地质大队

出版日期:2025-12-25 发布日期:2026-01-26

Petrochemical Characteristics and Ore-bearing Analysis of Plu Volcanic Rock Belt in Xinjiang

1. Hebei Huakan Resources and Environment Surveying Co., Ltd.；2. Key Laboratory of Geological Resources Exploration, Development and Ecological Protection of Hebei Province； 3. 514 Brigade of North China Geological Exploration Bureau

Online:2025-12-25 Published:2026-01-26

摘要/Abstract

摘要： 新疆普鲁火山岩带地处塔里木板块南缘、西昆仑地块之北，是晚古生代西昆仑造山带的重要组成部分，亦是区域多金属资源的关键赋存区。为揭示该火山岩带的形成机制、构造背景与矿物元素演化过程，界定西昆仑多金属矿床成矿期，评估成矿潜力，为成矿区带划分及后续矿产勘查提供科学依据。研究采用野外调查与室内分析相结合的方法，通过野外踏勘明确火山岩带的岩石建造、岩性组成及空间分布；通过室内岩石化学分析，结合 TAS 图解、AR-SiO₂关系图判别岩石类型与碱度，测试稀土元素并分析配分曲线探究岩浆源区，运用 Xg/Xa 值、浓集克拉克值评估含矿性。结果显示，该火山岩带以中基性火山岩为主，经历低绿片岩相—高绿片岩相变质，岩石类型繁杂；TAS图解中样品多为玄武岩、安山岩及超基性岩，碱度以钙碱性岩为主；稀土总量∑REE 为（25.85~120.70）×10⁻⁶，具有大陆拉斑玄武岩特征；Zn、Cu、Pb 的Xg/Xa值偏低，Sb 为强聚集元素，Zn、Pb、Cu、Ag 呈多峰偏态分布，矿床以铜质、铜-锌质为主。火山岩带形成与离散板块活动相关，具备巨大找矿潜力，成矿受裂谷环境、岩浆活动及断裂控制，研究成果对西昆仑构造、成矿研究及矿产勘查具重要价值。

关键词: 火山岩带, 岩石化学特征, 含矿性

Abstract: The Pulu volcanic rock belt in Xinjiang is located on the southern edge of the Tarim Plate and to the north of the West Kunlun Block. It is an important part of the Late Paleozoic West Kunlun orogen‐ ic belt and also a key area for the accumulation of polymetallic resources in the region. To reveal the forma‐ tion mechanism，tectonic background and mineral element evolution process of this volcanic rock belt，de‐ fine the mineralization period of the West Kunlun polymetallic deposit，assess the mineralization potential， and provide a scientific basis for the division of mineralization zones and subsequent mineral exploration. The research adopted a method combining field investigation and indoor analysis. Field exploration was con‐ ducted to clarify the rock formation，lithological composition and spatial distribution of the volcanic rock belt. The rock types and alkalinity were identified through rock chemical analysis indoors，combined with TAS diagrams and AR-SiO ₂ relationship diagrams. Rare earth elements were tested and the distribution curves were analyzed to explore the magma source area. The mineral bearing was evaluated by using Xg /Xa values and concentration Clark values. The results show that this volcanic rock belt is mainly composed of in‐ termediate-basic volcanic rocks，which have undergone metamorphism from low-green schist facies to high-green schist facies，and the rock types are complex. The samples in the TAS diagram are mostly ba‐ salt，andesite and ultrabasic rocks，and the alkalinity is mainly calc-alkaline rocks. The total amount of rare earths ∑REE is (25.85~120.70) ×10⁻⁶，showing the characteristics of continental thread-porphyry basalt. The Xg /Xa values of Zn，Cu and Pb are relatively low. Sb is a strongly aggregated element. Zn，Pb，Cu and Ag show a multi-peak skewed distribution. The deposit is mainly copper and copper-zinc. The formation of volcanic rock belts is related to the activities of discrete plates and has great potential for mineral explora‐ tion. The mineralization is controlled by the rift environment，magmatic activities and faults. The research re‐ sults are of great value for the study of the structure and mineralization of the West Kunlun and mineral ex‐ ploration.

Key words: volcanic rock belt, petrochemical characteristics, ore-bearing property

刘宁, 刘瑞年. 新疆普鲁火山岩带岩石化学特征及含矿性分析[J]. 现代矿业, 2025, 41(12): 174-181.

LIU Ning LIU Ruinian, . Petrochemical Characteristics and Ore-bearing Analysis of Plu Volcanic Rock Belt in Xinjiang[J]. Modern Mining, 2025, 41(12): 174-181.

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