• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Geochemistry: Exploration, Environment, Analysis >Rutile geochemistry as a guide to porphyry Cu-Au mineralization, Northparkes, New South Wales, Australia
【24h】

Rutile geochemistry as a guide to porphyry Cu-Au mineralization, Northparkes, New South Wales, Australia

机译：金红石地球化学作为斑岩型铜金矿化的指南，澳大利亚新南威尔士州北帕克斯

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The textures and compositions of accessory minerals formed during hydrothermal alteration in porphyry Cu–Au deposits may reflect those processes. Furthermore, if the accessory minerals are stable during weathering processes, they should be able to be used as a guide to mineralization even when the sulphides have been destroyed by weathering. In the Northparkes district, central western NSW, Australia, several Cu–Au ore deposits occur as disseminated or veined sulphides associated with a number of quartz monzonite porphyries intruded into lower Palaeozoic K-rich trachyandesites. This paper reports results from 2000 analyses of rutile grains from 80 samples of rock and soil from around one of these deposits, the E26N porphyry Cu–Au deposit. Within 100 m of ore, rutile grains are larger (commonly with length x breadth >4000 µm2) than the grains further from ore (length x breadth 0.2% (commonly >0.4%) whereas barren rutile generally contains 0.15% occur in rutile in the E26N ore zone and in an altered zone within an adjacent earlier intrusion. Thus, Nb in rutile is not as consistently related to mineralization as V in rutile. Vanadium- (and Nb-) rich rutile is present in both the saprolite and soils derived from mineralized rocks at the deposit. Thus, the V contents in rutile can be utilized as a guide to mineralization even in highly weathered material.
机译：斑岩型Cu-Au矿床 水热蚀变过程中形成的副矿物的质地和组成可能反映了这些过程。此外，如果辅助矿物 在风化过程中是稳定的，则即使硫化物 已经存在，它们也应该能够 用作矿化的指南。被风化破坏了。在澳大利亚新南威尔士州中西部的 北部公园区，一些Cu-Au矿床 发生为散布或脉状硫化物，并伴有石英的数量。斑岩斑岩侵入到下古生界 K含量高的滑钙锰矿中。本文报告了来自 的80个岩石和土壤样品中的金红石颗粒的2000 分析结果，这些样品围绕其中之一，即E26N斑岩Cu–Au 存款。在矿石的100 m内，金红石晶粒（通常 的长度x宽度> 4000 µm 2 ）比远离矿石的 x宽度0.2％（通常> 0.4％），而贫瘠的 金红石通常在E26N矿区和改变后的区域 >在相邻的较早侵入体中。因此，金红石中的Nb与金红石中的V的矿化关系不那么稳定。 钒（和Nb-）中含有丰富的金红石沉积物中的腐泥土 和矿化岩石中的土壤都如此，因此， 金红石中的V含量可作为矿化的指导 在高度风化的材料中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号