2022-04-29 17:40:07版本: Gold, as well as columbite-tantalite (coltan), cassiterite, wolframite or their derivatives, which are limited to tantalum, tin and tungsten. 指黄金、黑钨、锡石和钶钽铁矿，包括铌钽锰矿、锡石、黑钨矿及他们的提取物。