The process whereby original plagioclase in an igneous rock is altered to an epidote–sericite–secondary albite assemblage and original ferromagnesian minerals are altered to a chlorite–calcite–epidote–secondary iron-ore assemblage.
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。