【摘要】 辽宁岫岩软玉砂矿 (又称河磨玉矿 )是原生软玉矿的次生砂矿床。其玉石质地细腻 ,光泽滋润。作为装饰文化的宝玉石资源 ,越来越受到人们的青睐。岫岩软玉砂矿的发现和深入研究 ,不仅具有经济意义 ,还具有宝石学、考古学等多方面的意义。本文认为岫岩软玉砂矿属冲洪积类型 ,是第四世纪以来构造活动和气候环境的产物。河磨玉皮壳层是表生作用下元素迁移和交换的结果。本文还对宝石资源的开发利用与保护提出了建议。更多还原

【Abstract】 Liaoning Xiuyan Nephrite Placer Deposit(XNPD)is a secondary deposit of primary nephrite ore.the quality of the jades are fine and smooth,and their lustre are comfortable.The gems and jades resources,as a decorative culture,are more and more in people’s graces.The discovery and thorough research of XNPD has not only important significance in gemology and archaeology but also other aspects.This paper considers that XNPD belongs to alluvial\|pluvial type.The major types include 1)Alluvial Placer Deposits,which are mainly distributed in the river bed,T1 terrace and flood land of Baishahe;2)Alluvial\|pluvial Placer Deposits,which are mainly distributed in the fans of Wafangdian.In addition,there are also Talus Placer,Diluvium Placer and Coombe Placer.They are all distributed on the upper reaches area of Baishahe,which is in the Xiyu Gou drainage area near the site of primary mineral deposits.They are the products of tectonic activities and climate environment since Quaternary period.The special crust layers of HeMo Jade are the results of elements migration and exchange under supergenesis.They had been formed when the gravels buried near the phreatic water surface and in an open system.This paper also makes suggestions on the exploitation,utilization and protection of the jade resources.更多还原