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- Title
粤东新寮岽铜多金属矿区钻孔深部矿体铜同位素研究.
- Authors
范飞鹏; 肖惠良; 陈乐柱; 李海立; 刘建雄; 邓中林; 李少斌; 林梗伟; 周霞
- Abstract
The Xinliaodong copper-polymetallic deposit of Eastern Guangdong Province is one of newly discovered deposits. The ore district belongs to tin, tungsten, and copper ore cluster in the southeast coast, which have a very good ore-forming geological conditions. Chalcopyrite has δ65Cu value ranging from-0.34‰ to +1.37‰, which is consistent with δ65Cu value of porphyry deposits, indicating that ore-forming material Cu was derived from deep magma and ore-forming fluids were medium-high-temperature (250-420℃) magmatic-hydrothermal fluids. There is a close relationship between the fractionation of Cu isotope and magmatic hydrothermal activity. The formation of ore body is related to the dissolution of ore-forming fluids. With the increase of depth, there is atrend of increasing δ65Cu value, indicating a potential of a largee orebody. Copper isotope can directly indicate the location of the heat source. The δ65Cu values are below 0 for copper ore bodies close to the hydrothermal quartz veins.But the copper isotope values are higher in the hydrothermal contact zone, special ore-bearing surrounding rock and tectonic zone where indicates the edge or the front of the main ore body, most obvious ore prospecting mark.
- Publication
Rock & Mineral Analysis, 2017, Vol 36, Issue 4, p420
- ISSN
0254-5357
- Publication type
Article
- DOI
10.15898/j.cnki.11-2131/td.201609010133