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笔者曾在南非一些纤维蛇纹石石棉矿山从事与采矿有关的工作二十多年。这些矿床形成于五种不同的地质环境中,不同成矿环境的矿体有极大的差异。含矿岩石多变,或为局部蛇纹石化纯橄岩一橄榄岩,或为蛇纹岩。竖井、平硐、天井、盲井和主要坑道均开凿在片麻岩、石英岩、燧石层、熔岩、绿泥石片岩、滑石碳酸盐岩、滑石片岩、碳酸盐化蛇纹岩、蛇纹岩、纯橄岩和辉绿岩脉内。岩石分级表中所列举的各种岩石这里都能见到。普遍采用的采矿
I have worked on some of the fiber-serpentine asbestos mines in South Africa for more than twenty years. These deposits formed in five different geological environments, and the ore bodies in different metallogenic environments have great differences. Ore-bearing rocks vary, or as a local serpentinite dunite peridotite, or serpentinite. Shafts, adolescents, patios, blind wells and main tunnels are drilled in gneiss, quartzite, chert, lava, chlorite schist, talc carbonate, talc schist, carbonate serpentinite, Rhyolite, dunite and diabase dikes. All kinds of rocks listed in the rock classification can be seen here. Commonly used mining