Klunst

The Klunst is a formerly 440.0 m high mountain in Ebersbach / Sa. which is now mined in the quarry operation. It lies between the railway line Ebersbach- Lobau and the Ebersbacher Buschmühlhäusern and dominates the surrounding area by 60 to 80 m.

The mountain name contains the same root as the Steinklunsen between OppachEquipment and Beiersdorf. Local dialect means Klunst " jagged rocks ".

Geology

Which is composed of a Klunst Lamprophyrgang. This has the form of a lens, and is more than 150 m in width. Such transitions occur in the Lusatian Granodioritmassiv common. However, you reach nowhere this thickness as in the Klunst. The courses emphasize in the eastern part of the Granodioritmassivs from northeast to southwest and the west side of the northwest to the southeast. South of Lobau the transition region is of the one in the other direction, where directed from north to south passages extend. Also belonging to the Klunst it. Günter Mobius (1959 ) states in a study of the tectonics of dyke rocks that opening fractures and therefore the emergence of the gears is " best by a bump- like convexity " to explain that took place after the formation of all granodioritic rocks. During this process, the column tore open radially -like. Of these, the lamprophyrisches rock are now over 1200 in Upper Lusatia known to contain. The lamprophyres are popularly referred to as greenstone in older geological literature due to their petrographic training as diabase. For exact studies, the Lusatian lamprophyres have proven very varietätenreich why they received various names gesteinskundliche so Spessartite, Kersantit and more. At its construction, the minerals plagioclase, augite, hornblende, biotite and oxidic and sulfidic ore are mainly involved. Thus, although minor amounts could be recovered at the Klunst copper ore and galena in. Since her rock has been mined continuously since the beginning of the 20th century were the former riffartigen summit cliffs completely the quarry operation to the victim.

The following ( collect -driven interesting ) minerals were found in the Klunst: allanite - (Ce), ankerite, azurite, calcite, cerussite, chabazite - Ca, chalcopyrite, covellite, epidote, galena, garnet ( andradite ), hematite, heulandite -Ca, ilmenite, laumontite, magnetite, malachite, Magnesiohornblende, muscovite, phlogopite, plagioclase ( albite ), prehnite, pyrite, pyromorphite, pyrrhotite, quartz ( rock crystal), sphalerite, Stilbite - Ca, titanite and tourmaline.

History of the quarry company

The forest district space bush and the south followed Klunst belonged until 1921 to the possession of the town of Zittau. These leased in 1902 a partial area of the mountain ( the southern slope of the highest peak ) to a private quarry. The degradation starts very small. By 1910, put a Humboldt Association, the National Association Saxon homeland security and the council of Ebersbach an objection to the disfigurement of the landscape through the quarry operation since the summit represented geologically and geo-morphologically interesting natural formations.

In 1914 the East Germans Hartsteinwerke took over the quarry. With Zittau degradation contract will be completed by 1940, although already existed numerous objections. Hermann Andert began together with other German scientists a desperate struggle to save the Klunst. Contracts were signed and broken by the East Germans Hartsteinwerke until the first and greatest rock summit was blown away.

Former 2.Gipfelklippe the Klunst

Former 3.Gipfelklippe the Klunst

On January 21, 1937, the second peak was registered as a nature reserve in the natural monument book of the German Reich. 1940, the mining contract is extended by Zittau. On August 7, 1945, a request for the abolition of the reserve was provided by the East Germans Hartsteinwerke. He is rejected, the kingdom of nature protection law still applies. On August 4, 1954, will be replaced by the first conservation law of the GDR. However, the quarry gets the upper hand. Against the will of the citizens Ebersbacher the nature reserve is canceled on 21 September 1956 the official announcement in the Saxon newspaper.

As the now -filled Lamprophyrbruch at low Friedersdorf part of the Klunst VEB Lausitz granite Demitz - Thumitz. The crushed material was loaded on two soles of grippers on Kippautos and taken to the crusher and Klassierwerk. 1968 an industrial plant from France in place of an old has been established. Its annual capacity amounted at that time to about 240000 tons. In addition ballast ( 35.5 to 80 mm) were ( to 0.3 mm) won four varieties split ( 2.5-5 mm, 5-8, 8-12.5, 12.5-25 mm) and sand. Since 1967, the ropeway system was shut down from the crusher plant for loading device on the railway line Ebersbach- Lobau, trucks transported the crushed material to Ebersbach station.

After 1990, the operation of the quarry should be set and used as kreisliche landfill. Conservationists from Ebersbach start a petition with nearly 3,000 signatures against it.

The ProStein GmbH & Co. KG (founded: March 1, 2000) took over the quarry operation.

Since October 2007, is again the rail loading Ebersbach by a new rail loading. From the train station, get Ebersbach construction and road building operations grit and sand, which are used as aggregates.

Swell

• Between Strohm Mountain, Czorneboh and Kottmar. (Value of our home. Band 24). 1st edition. Akademie Verlag, Berlin 1974.
• Original documents from the district association NABU Lobau eV