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3D Geological Model of the Touro Cu Deposit, a World-Class Mafic-Siliciclastic VMS Deposit in the NW of the Iberian Peninsula
Minerals ( IF 2.2 ) Pub Date : 2021-01-16 , DOI: 10.3390/min11010085
Mónica Arias , Pablo Nuñez , Daniel Arias , Pablo Gumiel , Cesar Castañón , Jorge Fuertes-Blanco , Agustin Martin-Izard

The Touro volcanogenic massive sulfide (VMS) deposit is located in the NW of the Iberian Variscan massif in the Galicia-Trás-os-Montes Zone, an amalgamation of several allochthonous terrains. The Órdenes complex is the most extensive of the allochthone complexes, and amphibolites and paragneisses host the deposit, characterized as being massive or semimassive (stringers) sulfides, mostly made up of pyrrhotite and chalcopyrite. The total resources are 103 Mt, containing 0.41% copper. A 3D model of the different orebodies and host rocks was generated using data from 1090 drill core logs. The model revealed that the structure of the area is a N–S-trending antiform. The orebodies crop out in the limbs and in the hinge zone. The mineralized structures are mostly tabular, up to 100 m in thickness and subhorizontal. Based on the petrography, geochemistry and the 3D model, the Touro deposit is classified as a VMS of the mafic-siliciclastic type formed in an Ordovician back-arc setting, which was buried and metamorphosed in Middle Devonian.

中文翻译:

伊比利亚半岛西北部世界一流的铁镁硅质VMS矿藏Touro Cu矿床的3D地质模型

Touro火山成因的块状硫化物(VMS)矿床位于加利西亚-Trás-os-Montes地区的伊比利亚Variscan地块的西北部,该地块融合了多个异地地形。Årdenes配合物是异位酮配合物中最广泛的,沉积物为角闪石和链状菱镁矿,特征为块状或半块状(条状)硫化物,主要由黄铁矿和黄铜矿组成。总资源为103 Mt,含0.41%的铜。使用来自1090个钻孔岩心测井的数据生成了不同矿体和主体岩石的3D模型。该模型显示该区域的结构是N–S趋势的反型。矿体长在四肢和铰链区。矿化结构大部分为板状,厚度最大为100 m,且在水平以下。根据岩相学
更新日期:2021-01-18
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