摘要:
银是人类最早开发利用的元素之一, 随着社会的发展和科技的进步, 银的新材料属性日益突出。中国是银矿资源相对丰富的国家之一, 自1990年以来, 尤其是自2010年以来, 中国银矿找矿勘查取得较大突破, 新增银资源储量超过55 000 t, 新发现银矿产地超过53处, 探获了包括双尖子山超大型银矿在内的大量银矿。中国银矿有7个主要矿床类型, 以热液型和陆相火山-次火山型最为重要, 资源储量分别为161 271 t和48 870 t, 分别占总量的49.5%和15%。中国银矿主要产于中生代, 查明银资源储量为26 6476 t, 占比达74.25%; 空间上呈“东多西少”的分布格局。大兴安岭成矿带及其邻区查明银资源储量超过86 000 t, 是中国最重要的银矿产区和找矿潜力区。运用成矿系列理论, 寻找新矿区或新类型银矿、老银矿区外围和深部以及在成银带内找银矿等是中国银矿找矿勘查的重要方向。
Abstract:
Silver is one of the earliest elements utilized by humans, and with the development of society and advancement of technology, its new material properties have become increasingly prominent.China is one of the countries with relatively abundant silver ore resources.Since 1990, and especially since 2010, there have been significant breakthroughs in the exploration of silver ore in China, with more than 55 000 tons of new silver resource reserves added and more than 53 new silver deposits discovered, including a large amount of silver ore from the super-large Shuangjianzishan deposit.There are seven main types of silver deposits in China, with hydrothermal and continental volcanic-subvolcanic types being the most important, accounting for 49.5% and 15% of the total reserves with resources of 161 271 tons and 48 870 tons, respectively.The majority of China’s silver deposits is from the Mesozoic era, with identified silver resources reserves of 266 476 tons, accounting for 74.25%; spatially, there is a distribution pattern of “more in the east, less in the west”.The Great Xing’an Range metallogenic belt and its adjacent areas have identified silver resources reserves exceeding 86 000 tons, making it China’s most important silver ore region and a potential area for exploration.Applying the theory of ore-forming series to find new mining areas or new types of silver deposit, the periphery and depth of old silver mining areas, and silver deposit within the silver-forming belts are important directions for the exploration of silver ore in China.
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