| Don Javier斑岩型铜钼矿床地质特征 |
| Received:August 08, 2013 Revised:October 23, 2013 点此下载全文 |
| 引用本文：WU Bin,FANG Zhen,YE ZhenChao.2013.Geological characteristics of Don Javier porphyry copper molybdenum deposit[J].Mineral Deposits,32(6):1159~1170 |
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| 中文摘要:Don Javier矿床是在秘鲁南部新发现的大型斑岩铜钼矿床，位于秘鲁古近纪斑岩型铜钼成矿带内。该矿区主要出露Yarabamba花岗闪长岩体，NW走向的矿体赋存于英安斑岩及其围岩中。主要的矿石矿物有黄铜矿、辉钼矿、辉铜矿等。矿化蚀变由内向外依次为钾化、石英-绢云母化、泥化、青磐岩化，具有典型斑岩型铜矿床的蚀变分带特征。矿体呈筒状，主要分布于石英-绢云母化蚀变带中。矿区内的英安斑岩有4期，其中的前2期与矿化有关，后2期为成矿后侵位。NW向断裂是区内主要的控矿构造，对成岩成矿具有控制作用。与同一成矿带内相邻的Cerro Verde超大型斑岩型铜矿床相比较，两者具有类似的成矿特征。找矿实践表明，强烈的蚀变带、低阻高极化激电异常是找矿的有效标志。 |
| 中文关键词:地质学 斑岩铜矿 斑岩期次 矿化蚀变 矿床对比 Don Javier 秘鲁 |
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| Geological characteristics of Don Javier porphyry copper molybdenum deposit |
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| Abstract:The Don Javier deposit is a large-size porphyry Cu-Mo deposit newly discovered in southern Peru. It is located in the Palaeogene copper and molybdenum metallogenic belt of Peru. The main outcrop in the mining area is the granodiorite of Yarabamba, and the NW-striking ore body is hosted in the dacite porphyry and its country rock. The principal ore minerals mainly include chalcopyrite, molybdenite and chacocite; from the inner part outwards the mineral alterations are potassic alteration, quartz-sericitization, argillization and propylitization, with typical porphyry copper alteration zonation; the ore body presents cylindrical form and is mainly distributed in the quartz-sericitization zone; the dacite porphyry in the mining area consists of 4 phases of dacite porphyries, among which the former 2 phases are associated with mineralization, whereas the latter 2 phases belong to post mineralization emplacement. The Don Javier deposit is similar to the nearby Cerro Verde deposit, a superlarge copper porphyry deposit in the same metallogenic belt, in metallogenic characteristics. The NW-striking fracture is the main ore-controlling structure, which controlled the rock-forming and ore-forming process. Prospecting practice verifies that intense alteration belts and low resistivity and high IP anomalies are effective indicators in the prospecting activity. |
| keywords:geology porphyry copper deposit porphyry phases mineralized alteration deposit comparison Don Javier Peru |
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