Chemical element of metals. Cu comes from Cuprum, Fe comes from Ferrum, Ag from Argentum. The symbols were not followed by a period (full stop) as with abbreviations. Later chemical elements were also assigned unique chemical symbols, based on the name of the element, but not necessarily in English. For example, sodium has the chemical symbol 'Na' after the Latin "natrium". The same applies to "W" (wolfram) for tungsten, "Fe" (ferrum) for iron, "Hg" (hydrargyrum) for mercury, "Sn" (stannum) for tin, "K" (kalium) for potassium, "Au" (aurum) for gold, "Ag" (argentum) for silver, "Pb" (plumbum) for lead, "Cu" (cuprum) for copper, and
Au Sable, Michigan Au Sable, Michigan Au Sable is an unincorporated community in Au Sable Township of Iosco County in the U.S. state of Michigan. It is situated on the southern side of Au Sable River where it enters Lake Huron. The community of Oscoda is on the other side of the river. Au Sable is a census-designated place (CDP) for statistical purposes and has no legal status as an incorporated municipality. As of the 2010 census, the Au Sable CDP population was 1,404, down from 1,533 at the 2000 census. Au Sable was platted in 1849. The post office first opened with