pyrites
Longman Dictionary of Contemporary English 5++LDOCE 5++py·ri·tes /paɪˈraɪtiːz $ pə-/ noun [uncountable] 
HEGa mix of sulphur with a type of metal, usually iron, or iron and copper 硫化矿 → fool’s gold iron pyrites 黄铁矿
HEGa mix of sulphur with a type of metal, usually iron, or iron and copper 硫化矿 → fool’s gold iron pyrites 黄铁矿Examples from the Corpus
pyrites• When the wetlands are drained the iron pyrites in the soil are exposed to air and form sulphur acid.• The scientists warn that the deposits of pyrites are too large to neutralize by liming.Origin pyrites (1500-1600) Latin “flint”, from Greek, “of or in fire”, from pyr; → PYREpy·ri·tes nounChineseSyllable
type a sulphur a Corpus with mix of metal, usually of
pyrites
py‧ri‧tes /paɪˈraɪtiːz $ pə-/
noun [uncountable]
a mix of sulphur with a type of metal, usually iron, or iron and copper ⇨ fool’s gold:
iron pyrites
py‧ri‧tes /paɪˈraɪtiːz $ pə-/
noun [uncountable]a mix of sulphur with a type of metal, usually iron, or iron and copper ⇨ fool’s gold: