pyrite
noun [ U ] chemistry, geology specialized uk/ˈpaɪ.raɪt/ us/ˈpaɪ.raɪt/ (also pyrites, uk/paɪˈraɪ.tiːz/ us/paɪˈraɪ.tiːz/ iron pyrite)
硫化矿，黄铁矿（一种有光泽的黄色矿，含硫和一种金属，通常是铁）
a shiny, yellow mineral containing iron and sulphur, that looks like gold but is not valuable
Synonym: fool's gold