| 刘乃忠.福建省顺昌县山后铅锌矿床地质特征及找矿标志[J].地质与勘探,2012,48(3):570-579 |
| 福建省顺昌县山后铅锌矿床地质特征及找矿标志 |
| Geological Characteristics and Prospecting Indicators of the ShanhouLead-zinc Deposit in Shunchang County, Fujian Province |
| 投稿时间：2010-12-28 修订日期：2011-10-19 |
| DOI： |
| 中文关键词: 高原寒冷区 地电化学 隐伏矿 青海尕大阪 |
| 英文关键词: lead-zinc deposit, geological characteristics, deposit genesis, prospecting indicators |
| 基金项目:中国地质调查局大调查项目“福建建瓯八外洋-南平后坪铅锌矿评价冶项目(200110200033)资助 |
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| 中文摘要: |
| [摘 要]山后铅锌矿床位于福建省顺昌县高阳乡境内,目前已发现12 个铅锌矿体和3 个低品位矿体,矿体呈层状、似层状、透镜状产于F13、F14断裂之间的东岩组透辉(透闪) 石岩中,铅+锌品位7.21×10-2,求得铅+锌(332)+(333)金属量12.46 万吨,矿床达中型规模。通过对山后铅锌矿的地层、构造、岩体以及围岩蚀变等地质特征分析,认为铅锌矿体受东岩组绿片岩层位控制,并受热液叠加改造,属海底火山喷发-沉积变质(热液改造)块状硫化物型矿床;总结出中-晚元古代东岩组绿片岩层、地表矿体氧化后常见有黑色的褐铁矿斑点、围岩常伴有绿泥石化、绿帘石化、黄铁矿化、硅化等蚀变以及物化探异常等找矿标志,其对省内乃至华南地区寻找同类型矿床具重要意义。 |
| 英文摘要: |
| Abstract:The Shanhou lead-zinc deposit is located in Gaoyang Township of Shunchang County, Fujian Province. It occurs in green schist of the Dongyan Formation. Presently, 12 Pb-Zn orebodies and 3 low-grade Pb-Zn ore-bodies have been found there. The ore-bodies occur as stratified or stratoid beds and lenticular type in diopside or tremolite of the Dongyan Formation between faults F13 and F14 . The grade of Pb plus Zn is 7.21%, and the amount of 332 and 333 reserve is 124. 6 thousand tons, reaching the medium-sized deposit. The study indicates that the lead-zinc deposit is controlled by greenschist association of the Dongyan Formation, subjected to superimposed reformation of hydrothermal solution. It belongs to submarine volcano - sedimentary metamorphic (hydrothermal modification) massive sulfide deposit. And we summarize the prospecting indicators, including the greenschist association of the middle-late Proterozoic Dongyan Formation, henomenon of black limonite spots that are often seen after oxidation of ground orebodies,chloritization, epidotization, pyritized and silicification alteration of Surrounding rock, and geophysical and geochemical anomalies by the studies of the stratum, structure, rock mass and surrounding rock alteration on the Shanhou deposit. This study may have guiding significance for the similar deposits in Fujian Province and South China. |
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