摘要
塘子凹矿床位于个旧老厂矿田的西北部,矿体按产出方式可分为接触带原生硫化矿和脉状氧化矿。本文着重从微量元素地球化学和矿物地球化学角度探讨了本区脉状氧化矿的成因问题,认为该区脉状氧化矿与接触带原生硫化矿具有同源性,而与围岩大理岩没有成因联系;在成矿后期,地表流体对脉状矿体中多种微量元素特别是V、As、Sb、Bi等有强烈的富集作用。
The Tangziwa tin polymetal deposit is located on the northwestern region of the Laochang orefield, Gejiu, Yunnan. The orebodies can be divided into two types in terms of their shapes: skarn sulfide orebodies and vein oxide orebodies. Based on the characteristics of trace elements and mineral geochemistry for vein oxide orebodies, the authors think that the vein oxide orebodies were similar to the skarn orebodies related to the granites, and there has no genetic relation with the carbonate wallrocks. In the oxidizing stage for the vein orebodies, many trace elements, such as Cu, Pb, Zn, W, Sn, Co, Ni, V, Ag, Sb and Bi were concentrated by ground acidic fluids.
出处
《矿物学报》
CAS
CSCD
北大核心
2004年第2期136-142,共7页
Acta Mineralogica Sinica
基金
云南省省院省校合作项目(2000YK-05)
国家重大基础研究规划项目(2001CB409805)
