摘要
河南小秦岭金矿为石英脉型金矿床,成因类型为岩浆期后热液型。矿石中主要矿物为石英,其次为金属硫化物;金矿物主要为自然金,其次为银金矿和含银自然金、碲金矿,碲金银矿微量。自然金为包体金和裂隙金及粒间金,粒度以中细粒为主,其成色普遍偏高。黄铁矿以中细粒半自形五角十二面体及其聚形含金最高。其中元素含量统计特征规律不明显。热电系数具明显指示作用。石英的晶体特征、元素含量具指示意义。其热发光,红外光谱为矿床评价重要标志。
Henan＇s Xiaoqinling gold deposits belong to quartz-vein type with a genesis of post-magmatic hydrothermal. The major minerals are quartz and less sulfides. Gold minerals are mainly natural gold, less electrum, silver-bearing gold, calaverite and small quantity of silver-bearing ealaverite. Natural gold exists in the form of inclusives, fissures and intergrain, fine to medium grain, high grade. Gold is highest in pyrites with forms of fine-medium grain semi-euhedral pentagonal dodecahedron and its cohesion, unclear in their element distribution, but the pyroelectricity and quartz crystal mark the gold content. Thermal luminescence and infrared spectroscopy are a vital sign in gold evaluation.
出处
《资源与产业》
2012年第5期89-99,共11页
Resources & Industries
关键词
金矿床
矿物
标型特征
河南小秦岭
gold deposit
mineral
typomorphics
Xiaoqinling in Henan province
