摘要
个旧矿区以南北向的个旧大断裂为界,分为东、西两个成矿区(以下分别简称东区、西区)。东区和西区在矿种、成矿特点、矿化类型、矿床规模等方面均有明显的差异。已勘探的大型锡矿床绝大多数分布于东区,如老厂、马拉格、松树脚及卡房等锡多金属矿田(图1);而西区仅在靠近个旧大断裂的牛屎坡发现大型残坡积砂锡矿床,其它虽有众多的矿点分布,但始终没有找到大、中型锡矿床。西区的成矿远景一直是争议较大、悬而未决的问题。
According to the X-ray diffraction, infrared absorption spectroscopy and laser spectrometry analyses of the pyrite in Gejiu tin deposit, it has been discovered that there are apparent differences in the component, spetrum line, lattice parameter and crystal formula of the pyrite in east, west metallogenetic area of Gejiu, Therefore, the conclusion is that the metallogenetic geological condition of them is different from each other. The east area is favourable to forming tin deposit, where as the west one favourable to silver deposit. In the west area, the prospecting work must mainly aim at Ag, Pb, Zn(Au), etc, resourcs.
出处
《云南地质》
1989年第2期140-146,共7页
Yunnan Geology
