摘要
云南开采锑矿在清光绪三十四年(公元1909年)已有记载。1909年官商合办的宝华锑矿公司成立,开采文山、广南、屏边、西畴及开远等地之锑矿,民国二十八年(公元1939年)最盛,年产600吨,主要销往香港。新中国成立后,云南的锑矿地质勘探工作进展很大,发现锑矿床及矿点近百处,探明大型矿床1处,中小型矿床4处,已探明锑金属储量在全国各省区中居第五位。锑矿的开采量也有较大增长,据不完全统计,1987年全省产精锑8000吨,其中出口量为2389吨。已有广南木利锑矿、巍山笔架山和开远羊街炼锑厂等一批骨干企业。据成矿远景分析,云南锑矿尚有广阔的找矿前景。
The antimony ore deposits in Yunnan province can be divided into four metallogenic zones, i.e., the Mile—Shizong, Wenshan—Guangnan, Weixi—Weishan and Boshan—Zhenkang antimony ore zones. Their main geological setting of metallization and factors include:(1)the distributions for ore deposits bear a close relation to the dense zones of Moho and the variation zones of crustal thickness from thicker to thinner——spatially showing consistence;(2)there are many ore-bearing horizons in which the Lower Devonian Pojiao Formation is the major one and the subordinate horizons comprise the Upper Permian Longtan Formation, Middle Triassic Gejiu Formation and Upper Triassic Sanhedong Formation;(3)most antimony ore deposite(bodies)occur in the high silicified carbonate rocks;(4)the antimony ore deporsits(bodies)exist mainly in anticline structures and the enrichment of ores is closely related to small structures. At any rate, we should have our eyes on the ore deposits of“stratabound”type in ore belt division, choice of target areas of prospecting and evaluation for ore deposits. The sedimentoreformation is the metallogenic mechanism for the strata-bound antimony ore deposit so that the criteria and methods of prospecting can be determined in the view of the above.
出处
《云南地质》
1990年第2期83-94,共12页
Yunnan Geology
