Geochemical characteristics of rare earth elements and their implications for the Huachanggou gold deposit in Shaanxi Province, China

• Published in: Journal of rare earths 2013-02, Vol.31 (2), p.215-226
• Main Author: 刘冲昊 刘家军 王建平 杨隆勃 吴杰 贾磊
• Format: Article
• Language: English
• Subjects: Fluid dynamics; Fluid flow; Fluids; Gold; Qinling orogenic belt; Rare earth elements; Rare earth metals; Rocks; source of ore-forming materials; the Huachanggou gold deposit; Walls; 中国; 围岩特征; 地球化学特征; 成矿流体; 矿石样品; 稀土元素特征; 铧厂沟金矿床; 陕西省
• ISSN: 1002-0721; 2509-4963
• DOI: 10.1016/S1002-0721(12)60261-0

The Huachanggou gold deposit is located in the south part of the Mian-Lue suture zone in the Qinling orogenic belt. Rare earth element （REE） concentrations determined by ICP-MS are shown to characterize the ore samples and their wall rocks in three ore zones in order to reveal the origin of ore-forming materials and fluid. In AuI, REE chondrite normalized patterns of ore are similar to those of ore-controlling spilite; the ore-forming materials originated from deep magma, and magmatic activity offered main hydrothermal source for gold mineralization. The REE characteristics of AuII and AuIII are similar, and most of the ore samples are similar with the wall rocks. The ore-forming fluids of AuII and AuIII were metamorphic hydrothermal fluids which had extracted ore-forming materials part from the wall rocks, and part from the spilite in AuI.