LAURIUM  , a

village of Houghton county, Michigan, U.S.A., near the centre of Keweenaw peninsula, the northern extremity of the state . Pop . (18go) 1159; (1900) 5643, of whom 2286 were foreign-born; (1904) 7653; (1910) 8537 . It is served by the Mineral Range and the Mohawk and Copper Range railways . It is in one of the most productive copper districts in the United States, and copper mining is its chief industry . Immediately W. of Laurium is the famous Calumet and Hecla mine . The village was formerly named Calumet, and was incorporated under that name in 1889, but in 1895 its name was changed by the legislature to Laurium, in allusion to the mineral wealth of Laurium in Greece . The name Calumet is now applied to the post office in the village of Red Jacket (incorporated 1875; pop . 1900, 4668; 1904, 3784; 1910, 4211), W. of the Calumet and Hecla mine; and Laurium, the mining property and Red Jacket are all in the township of Calumet (pop . 1904, state census, 28,587) .