Near-surface, iron oxide-rich zone overlying a sulphide-bearing ore deposit, caused by the oxidation and leaching of sulphides. Useful in mineral exploration as a visible guide to sulphide mineralization by its yellow or red colour.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。