Mineral Many sulfide minerals are economically important as metal ores; examples include sphalerite (ZnS), an ore of zinc, galena (PbS), an ore of lead, cinnabar (HgS), an ore of mercury, and molybdenite (MoS, an ore of molybdenum. Pyrite (FeS), is the most commonly occurring sulfide, and can be found in most geological environments. It is not, however, an ore of iron, but can be instead oxidized to produce sulfuric acid. Related to the sulfides are the rare sulfosalts, in which a metallic element is bonded to sulfur and a semimetal such as antimony, arsenic, or bismuth. Like the sulfides, sulfosalts are
Breinigerberg its calamine flora. The hill of "Schlangenberg" is 276 metres above sea level and originates in the former ore mine of Breinigerberg. Names like "Bleiweg", which means "Way of lead", even today, give hints to the history of the village. The calamine from the ore mine Breinigerberg was used exclusively in Stolberg for the production of brass. The history of Breinigerberg can be traced back to the Romans. Twenty five coins dated between 100 BC and the year 92/93 AD as well as remains of a Roman craftsmen settlement had been found in the village. The buildings show that the