滇西通过近几年来的工作,找到了许多有较大工业价值的矿,扩大了许多矿区的远景。但对其中以锌矿为主、铅矿极少的残积和坡积砂矿,由于工作初期缺乏经验,而采用了原生矿的勘探方法,利用了小平坑、槽探进行水平取样,以致造成损失。通过进一步工作后才开始改变了勘探方法,并对这类砂矿有了进一步的认识。这类矿床见于思茅凹陷带内,是由石炭二迭(?)灰岩及砂页岩系组成的基底折皱带上低温铅锌矿,经 Through the work in recent years, Yunnan Province has found many mines with greater industrial value and expanded the prospect of many mines. However, in the case of the stratum and siderite deposits, which are dominated by zinc and have very little lead and lead, due to the lack of experience in the initial stage of their work, the exploration method of primary ore was adopted and the horizontal pit sampling was carried out by using the Xiaoping Pit and trenching to cause losses . After further work, it began to change the exploration methods and got a better understanding of such sand mines. This type of deposit is found in the Simao sag zone and is a low-temperature lead-zinc deposit on the basement fold belt composed of Permian Permian limestone and sand shale.