新疆阿克陶县塔木—卡兰古铅锌矿带矿床地质和硫同位素特征

被引:46
作者
祝新友
汪东波
王书来
机构
[1] 有色金属工业总公司北京矿产地质研究所!北京,有色金属工业总公司北京矿产地质研究所!北京,有色金属工业总公司北京矿产地质研究所!北京
关键词
铅锌矿床; 矿床成因; 硫同位素; 新疆塔木—卡兰古;
D O I
10.16111/j.0258-7106.1998.03.002
中图分类号
P618.4 [有色金属];
学科分类号
摘要
新疆塔木—卡兰古铅锌矿带位于塔里木板块西南缘之晚古生代碳酸盐台地环境中。矿化以铅锌矿为主 ,个别矿床含铜。矿床赋存于中泥盆统—下石炭统三个控矿的古含水层中 ,矿体形态复杂 ,富矿段往往赋存于多组断裂构造交汇部位。矿石根据其结构大体可分两类 :一类呈角砾状构造 ,硫化物呈浸染状 ,共 (伴 )生赤铁矿和磁铁矿 ;另一类矿石中硫化物以胶状、草莓状结构为主。硫化物硫同位素值具有较宽的范围 ,δ3 4 S为 - 39.2‰~ + 14‰ ,主要集中在 - 2 9.3‰~- 17.7‰和 - 3.6‰~ + 5 .1‰两个区间 ,分别与上述两类矿石相对应。研究表明 ,位于泥盆系与石炭系间的第二古含水层是最重要的找矿层位 ,角砾岩带是重要的找矿评价标志 ,矿床成因可能属密西西比河谷型 (MVT) ,两种性质差异很大的低温热液混合引起成矿物质的沉淀和成矿
引用
收藏
页码:204 / 214
页数:11
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