1勘查新发现铜矿床概况2000年以来,全球勘查新发现了115个大型铜矿床(S&P Global Market Intelligence, 2024),其中有26个分布在亚洲(图1),占全球勘查新发现大型铜矿床总数量的22.61%,是除拉丁美洲外勘查新发现大型铜矿床数量最多...1勘查新发现铜矿床概况2000年以来,全球勘查新发现了115个大型铜矿床(S&P Global Market Intelligence, 2024),其中有26个分布在亚洲(图1),占全球勘查新发现大型铜矿床总数量的22.61%,是除拉丁美洲外勘查新发现大型铜矿床数量最多的大洲。从国家看,2000年以来,亚洲勘查新发现的大型铜矿床主要分布在中国、印度尼西亚、土耳其、菲律宾、蒙古、哈萨克斯坦、伊朗、巴基斯坦等国家;其中,中国是亚洲勘查新发现大型铜矿数量最多的国家,有9个,其余国家新发现大型铜矿床数量均不足5个(表1)。展开更多
1勘查新发现金矿床特征。据不完全统计,21世纪以来,全球勘查新发现了161个大型金矿床(S&P Global Market Intelligence,2024),其中,有35个分布在亚洲大陆(包括俄罗斯位于亚洲大陆的区域内新发现的金矿床,下同)(图1),约占全球勘查新...1勘查新发现金矿床特征。据不完全统计,21世纪以来,全球勘查新发现了161个大型金矿床(S&P Global Market Intelligence,2024),其中,有35个分布在亚洲大陆(包括俄罗斯位于亚洲大陆的区域内新发现的金矿床,下同)(图1),约占全球勘查新发现大型金矿床总数量的21.74%,是全球勘查新发现大型金矿床数量第二多的大洲。展开更多
Sandaowanzi gold deposit,Heilongjiang Province,is the only single telluride type gold deposit so far documented in the world,in which 90% of gold is hosted in gold-silver telluride minerals.Optical microscope observat...Sandaowanzi gold deposit,Heilongjiang Province,is the only single telluride type gold deposit so far documented in the world,in which 90% of gold is hosted in gold-silver telluride minerals.Optical microscope observation,scanning electron microscope,electron probe and X-ray diffraction analysis identified abundant intergrowth textures in the Au-Ag-Te minerals,typified by sylvanite-hosting hessite crystals and hessite-hosting petzite crystals.The intergrown minerals and their chemistry are consistent,and the hosted minerals are mostly worm-like or as oriented stripes,evenly distributed in the hosting minerals,with clear and smooth interfaces.These suggest an exsolution origin for the intergrowth texture.With reference to the phase-transformation temperature derived from synthesis experiments of tellurides,the exsolution texture of Au-Ag-Te minerals implies that the veined tellurides formed at 150-220℃.The early stage disseminated tellurides formed at log f(Te 2) from 13.6 to 7.8,log f(S 2) from 11.7 to 7.6,whereas the late stage veined tellurides formed at log f(Te 2) ranging from 11.2 to 9.7 and log f(S 2) from 16.8 to 12.2.展开更多
文摘1勘查新发现铜矿床概况2000年以来,全球勘查新发现了115个大型铜矿床(S&P Global Market Intelligence, 2024),其中有26个分布在亚洲(图1),占全球勘查新发现大型铜矿床总数量的22.61%,是除拉丁美洲外勘查新发现大型铜矿床数量最多的大洲。从国家看,2000年以来,亚洲勘查新发现的大型铜矿床主要分布在中国、印度尼西亚、土耳其、菲律宾、蒙古、哈萨克斯坦、伊朗、巴基斯坦等国家;其中,中国是亚洲勘查新发现大型铜矿数量最多的国家,有9个,其余国家新发现大型铜矿床数量均不足5个(表1)。
文摘1勘查新发现金矿床特征。据不完全统计,21世纪以来,全球勘查新发现了161个大型金矿床(S&P Global Market Intelligence,2024),其中,有35个分布在亚洲大陆(包括俄罗斯位于亚洲大陆的区域内新发现的金矿床,下同)(图1),约占全球勘查新发现大型金矿床总数量的21.74%,是全球勘查新发现大型金矿床数量第二多的大洲。
基金supported by the Project of China Geological Survey(1212011121083)the Public Industry Research and Development Program of the Ministry of Land and Resources(200811011)
文摘Sandaowanzi gold deposit,Heilongjiang Province,is the only single telluride type gold deposit so far documented in the world,in which 90% of gold is hosted in gold-silver telluride minerals.Optical microscope observation,scanning electron microscope,electron probe and X-ray diffraction analysis identified abundant intergrowth textures in the Au-Ag-Te minerals,typified by sylvanite-hosting hessite crystals and hessite-hosting petzite crystals.The intergrown minerals and their chemistry are consistent,and the hosted minerals are mostly worm-like or as oriented stripes,evenly distributed in the hosting minerals,with clear and smooth interfaces.These suggest an exsolution origin for the intergrowth texture.With reference to the phase-transformation temperature derived from synthesis experiments of tellurides,the exsolution texture of Au-Ag-Te minerals implies that the veined tellurides formed at 150-220℃.The early stage disseminated tellurides formed at log f(Te 2) from 13.6 to 7.8,log f(S 2) from 11.7 to 7.6,whereas the late stage veined tellurides formed at log f(Te 2) ranging from 11.2 to 9.7 and log f(S 2) from 16.8 to 12.2.
