Mushgai Khudag 磷灰石和方解石Sr同位素数据集

该数据集包含Mushgai Khudag磷灰石-磁铁矿岩、碳酸岩及正长岩中磷灰石和方解石的微区原位Sr同位素组成，实验分析在中国地质大学（武汉）地质过程与成矿预测全国重点实验室采用激光剥蚀多接收电感耦合等离子体质谱（LA-MC-ICP-MS）完成，Sr同位素测定采用内标法进行仪器质量歧视校正，及对Kr, Rb 和REEs双电荷干扰扣除。以Qingdao Coral珊瑚作为监控标样。 该高分辨率Sr同位素数据集有效揭示了碳酸岩-正长岩体系中壳幔物质贡献比例及成矿流体运移路径，为厘定稀土元素超常富集过程中多源流体混合机制提供了关键同位素地球化学证据。

This dataset contains in-situ micro-area Sr isotope compositions of apatite and calcite from apatite-magnetitite, carbonatite and syenite in Mushgai Khudag. The experimental analyses were conducted at the State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences (Wuhan) using laser ablation multi-collector inductively coupled plasma mass spectrometry (LA-MC-ICP-MS). For Sr isotope measurements, instrumental mass bias was corrected via the internal standard method, and doubly charged ion interferences from Kr, Rb and REEs were subtracted. The Qingdao Coral was employed as the monitoring reference material. This high-resolution Sr isotope dataset effectively reveals the crust-mantle material contribution proportions and ore-forming fluid migration pathways within the carbonatite-syenite system, providing critical isotope geochemical evidence for constraining the multi-source fluid mixing mechanism during the anomalous enrichment of rare earth elements.

搜集汇总

背景与挑战

背景概述

该数据集提供了蒙古Mushgai Khudag地区磷灰石和方解石的微区原位Sr同位素数据，通过LA-MC-ICP-MS技术分析获得，旨在揭示碳酸岩-正长岩体系中壳幔物质混合比例和成矿流体运移路径，为稀土元素超常富集过程的多源流体混合机制提供关键地球化学证据。数据集规模较小（14.05 KB），采用开放获取方式共享，覆盖特定地理坐标区域，适用于固体地球科学领域的研究。