Home / Standards / GB/T 17412.3-1998 GB/T 17412.3-1998 Active Classification and nomenclature schemes of the rocks--Classification and nomenclature schemes of metamorphic rocks 岩石分类和命名方案 变质岩岩石的分类和命名方案 Standard Type GBT ICS 73-010 CCS D10 Status 现行 Issue Date 1998-06-17 Implementation 1999-01-01 Responsible Dept 自然资源部（国土） Drafting Unit N/A