序言我们过去地质调查的缺点,就是对局部的观察虽然做了很大的努力,但是缺乏全面的展望。由于苏联专家多次启示要我们对矿区全体进行广泛的调查,和最近美国的地质杂志上记载著:“从总的大构造去寻找矿床”的论文等等。因此我们痛感应当从新由矿床生成的规律来确定我们的调查方法。过去二年间我们所获得的基本知识,及所作的研究,譬如附近一般的地质分布,围岩的变质、露头的状况、火成岩与水成岩的关系、或斯卡隆,矿染、小石英脉、断层、裂罅、岩脉等等, Preface The shortcoming of our past geological survey is that although a great deal of effort has been devoted to local observation, there is a lack of a comprehensive outlook. As the Soviet experts repeatedly enlightened us to carry out extensive investigations into the entire mining area, and more recently in the American geology journal, a paper entitled “Searching for Deposits from the General Large Structure” and so forth. Therefore, we feel that we should determine the method of investigation based on the law newly generated from the deposit. The basic knowledge we have gained in the past two years, and the studies we have made, such as the general geological distribution in the vicinity, the deterioration of surrounding rocks, the conditions of outcrops, the relationship between igneous and diagenetic rocks, or the skarons, mineral deposits, small quartz veins, faults , Fissure, ditch and so on,