中国银矿的资源特征及成矿规律概要

中国银矿资源丰富,成矿地质条件优越,主要以共伴生为主,近年来独立银矿找矿也取得一些进展。本文系统搜集了国内外银矿数量与规模、储量和分布等内容,梳理了中国银矿资源分布及储量分布规律,总结了中国银矿资源特点。在对全国490处银矿矿产地资料系统梳理的基础上,深入总结了中国银矿的成矿规律,划分了海相火山沉积型、陆相火山次火山岩型、矽卡岩型、热液型(脉型和层控型)、沉积变质型、沉积型和新生风化淋积型等7个银矿预测类型,其中前4个应该作为重点预测类型,并划分出32个成银带,编制了"中国成银带分布图",为中国银矿资源潜力评价和勘查部署提供了理论依据。

A Summary of Resources Characteristic and Metallogenic Regularity of Silver Deposits in China

China's silver mines, widely distributed,are rich in resources. Although silver deposits are mainly associated with Pb Zn deposits, a number of independent silver deposits have also been discovered in recent years. There are silver deposits of different types, such as submarine volcanism and continental volcanism related deposits, intrusion related deposits, sedimentary related deposits etc. Metallogenic regularity of the national silver deposits has been summarized systematically based mainly on the data from 490 silver mineral deposits in this study. Submarine volcanic sedimentary type, continental volcanic or sub volcanic type, skarn type, hydrothermal type (including vein type and stratabound type), sedimentary metamorphic type, sedimentary type and regolith type are divided, with the first 4 treated as the most important prediction types of silver deposits. In this paper, 32 silver mineralization belts have been delineated. The map of "Spatial distribution of silver mineralization belts in China" and other series of maps finished in this study provide the theoretical basis for the evaluation and prognosis of silver resources potential in China.