Ore genesis and loses its metal carrying capacity. Ore deposits rarely fit neatly into the categories in which geologists wish to place them. Many may be formed by one or more of the basic genesis processes above, creating ambiguous classifications and much argument and conjecture. Often ore deposits are classified after examples of their type, for instance Broken Hill type lead-zinc-silver deposits or Carlin–type gold deposits. Classification of hydrothermal ore deposits is also achieved by classifying according to the temperature of formation, which roughly also correlates with particular mineralising fluids, mineral associations and structural styles. This scheme, proposed by Waldemar Lindgren (1933)
Ore Mountains mining in the southern forelands of the Ore Mountains. Europe's largest deposits of lithium-bearing mica zinnwaldite in Cínovec, a Czech village between town of Dubí and the border with Germany which gave its old German name Zinnwald to the mineral, are expected to be mined starting 2019 (as of June 2017). When several Ore Mountain passes were upgraded into "chaussees" in the 19th century, and the Upper Ore Mountains were accessed by the railway, tourism began to develop. One of the early promoters of tourism in the Ore Mountains was Otto Delitsch. In 1907, a memorial was erected to him