Home / Standards / GB/T 42630-2023 GB/T 42630-2023 Active Methods for chemical phase analysis of copper nickel sulfide ores—Determination of nickel and cobalt contents in six mineral phases 铜镍硫化物矿石化学物相分析方法 6 种矿物相中镍和钴含量的测定 Standard Type GBT ICS 07.060 CCS D40 Status 现行 Issue Date 2023-05-23 Implementation 2023-12-01 Responsible Dept 自然资源部(国土) Drafting Unit N/A