Calamine (mineral) enough was known of metallic zinc to make brass solder directly by combining copper and spelter (zinc ingots). In 1738 a patent was granted to William Champion, a Bristol brass founder, for the large-scale reduction of calamine to produce spelter. In 1684 a paper presented to the Royal Society touched on the medicinal and veterinary properties of the compound when in finely powdered form. Calamine (mineral) Calamine is a historic name for an ore of zinc. The name "calamine" was derived from "lapis calaminaris", a Latin corruption of Greek "cadmia (καδμία)", the old name for zinc ores in general. The
Ore Mountains role on the Saxon side of the border. For example, in Hermsdorf/Erzgeb. in the Eastern Ore Mountains, calcite is mined, and near Lengefeld in the Central Ore Mountains, dolomite marble is extracted. For the first time in two decades, an ore mine was opened in Niederschlag near Oberwiesenthal on 28 October 2010. It is expected that 50,000-130,000 tons of fluorspar per year will be extracted there. In the Czech part of the Ore Mountains, tourism has gained a certain importance, even though the Krkonoše are more important for domestic tourism. In addition, mining still plays a greater role, particularly coal