摘要
爬奔金矿位于老挝琅勃拉邦省巴乌县,区域型NE向构造控制矿带分布,次级NNW-NW向构造为矿区主要容矿构造,矿体均赋存于下二叠统厚层-巨厚层的弱变形灰岩中。"红化"(褐铁矿、菱铁化)蚀变为矿区的主要找矿标志。包裹体符合低盐度NaCl-H_2O体系,根据成矿压力和成矿深度经验公式,计算得出成矿深度为0.48~0.960 km,属于浅成低温热液矿床。δD_(H_2O)、δ^(18)O值分析表明,成矿热液流体为混合来源,主要是岩浆水与地层封存的古大气降水的混合。
Phapon gold deposit is located in Pak Ou county,Luangprabang province,Laos.Regional NE-trending fracture controls the distribution of ore belt.Secondary NNW-NW trending structures are the main ore-bearing structures.Ore body only occurs in the lower Permian weak deformation limestone.＂Reddening alteration＂（limonite and siderite） is the main ore hunting indicator of the mining area.Inclusions belongs to the low salinity NaCl-H_2O system,according to the metallogenic pressure and empirical formula,the metallogenic depth are 0.48～0.960 km,so the Phapon gold deposit belongs to epithermal gold deposit.The figure of δD_（H2O）、δ^（18）O indicates that the Phapon gold deposit ore fluids is of a mixed origin of magmatic water and ancient atmospheric precipitation.
出处
《科学技术与工程》
北大核心
2017年第30期14-19,共6页
Science Technology and Engineering
关键词
爬奔金矿
地球化学特征
矿床成因
老挝
Phapon gold deposit geochemical characteristics genesis Laos
