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一、引言在西秦岭北部甲山的南北坡分布有許多矽嘎岩型金属矿床,它們組成两个平行的成矿带。在甲山北坡以銅鎢鉄矿床为主,南坡以銅鎢砷等矿床最多,两者都受华力西晚期花崗閃长岩侵入体的控制,矿床的主要金属种类与岩浆分异有密切关系。1959年笔者参加区內南坡几个矿床的普查与勘探工作,曾有机会在野外做較詳細的地貭观察,并系統地收集矿床与火成岩的資料。最近,在編写勘探报告时,将这些材料进行初步的研究与整理,作此报导,供大家参考。在整理过程中得呂万旭等同志协助及省地貭局宋叔和、陈鑫同志的指导,謹此致謝。
I. INTRODUCTION There are many SiGe-type metallogenic deposits distributed on the north and south slopes of Mount Kaili in the north of the West Qinling Mountains, which make up two parallel metallogenic belt. The northern slope of Mt. Karst is dominated by copper-tungsten ore deposits and the southern slope is dominated by copper, tungsten and arsenic, both of which are controlled by the intrusive granodiorite in the late Hurricane West. The major metal types and magmatic differences close relationship. In 1959, the author participated in the census and exploration work of several deposits in the southern slope of the area, and had the opportunity to do more detailed observation in the field and systematically collect information on deposits and igneous rocks. Recently, in the preparation of the exploration report, the preliminary study of these materials and finishing, for this report, for your reference. In the process of arranging, Lu Wanxu and other comrades to assist and Provincial Bureau of Song Shu and Comrade Chen Xin guidance, would like to thank.