Copper mining in the United States the northwest part of the state in the early 1850s, and mining began in 1855. The ore is massive sulfide and disseminated ore in mica schist and gneiss, and amphibole schist and gneiss. The principal ore mineral is chalcopyrite, which occurs with pyrrhotite and pyrite, The mine operated until 1883, then worked sporadically until large-scale mining began in 1957. The mine closed for good in 1962. Total production was 31,000 tonnes of copper, 9,400 ounces of gold, and 145,000 ounces of silver. Copper was mined at Creta from 1965 to about 1975. The ore 2% to 4.5% copper as chalcocite
Ore Mountains Duke George the Bearded, it has been held annually since. Also interesting is Ore Mountain cuisine, which is simple, but rich in tradition. Since 1998 the Ore Mountains have striven to achieve UNESCO World Heritage status as the Ore Mountain Mining Region ("Montanregion Erzgebirge"). Ore Mountains The Ore Mountains or Ore Mountain Range () ( ; ; both literally "ore mountains") in Central Europe have formed a natural border between Saxony and Bohemia for around 800 years, from the 12th to the 20th centuries. Today, the border between Germany and the Czech Republic runs just north of the main crest