| 汪东波,董国仪.广东省潮安厚婆坳锡矿床的地球化学特征[J].地质找矿论丛,1988,(1):76-84 |
| 广东省潮安厚婆坳锡矿床的地球化学特征 |
| THE STUDY ON GEOCHEMISTRY AND METALLOGENY OF HOUPOAO TIN DEPOSIT IN CHAOAN COUNTY, GUANG DONG PROUINCE |
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| DOI：10.6053/j.issn.1001-1412.1988.1. 008 |
| 中文关键词: 衍生含锡建造 成矿物理化学条件 逸度 成矿流体 稳定同位素 |
| 英文关键词: |
| 基金项目: |
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| 中文摘要: |
| 系统的地球化学研究表明:中生界上三叠—下侏罗统兰塘群系在加里东褶皱基底上发育起来的衍生含锡建造,是厚婆坳锡矿的主要物质来源。成矿流体为同生建造水,矿床形成的物理化学条件为T=260～375℃,盐度6.14～7.42%,fo210-30-10-37,fs210-10.5-1012.5,PH4.91-5.40,锡以氯的亚锡配合物形式迁移。矿床的综合地球化学异常分带序列是垂直的(上-下);Ba-Y-Mn(As.Sb.Hg)-Cu-Ni-Co-Zn-(Sn.Mo.Bi)-Pb-Ag-Ti-V-Cr-Be。 |
| 英文摘要: |
| Systematical geochemical studies show that the Mesozoic Upper Triassic-Lower Juressic Lantang group is a derivative tin-bearing formation superposed on the Caledonian folded basement, therefore,which is a major source of Houpoao tin deposit. The biotite granite in the mining district is thetransitive granite between tin-bearing granite and tin-barren granite and the heat source for ore-forming. The ore-forming fluid probabaly is syngenetic water. The favourable physycal-chemical condition of tin mineralization is considered to be T=260-375℃, salinity 6.14-7.42%, fs2=10-10.5-10-12.5, fo2=10-30-10-37, PH=4.91-5.4, and meanwhile, the Sn++ - C-coordinated ions were likely to be cheif forms of the migrating tin. The primary geochemi calanomaly sequence is (vertical, from upper to lower) Ba-y-Mn-(As, Sb, Hg)-Cu-Ni-Co-Zn-(Sn, Mo,Bi)-Pb-Ag-Ti-V-Cr-Be. |
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