Opposite gear train

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The 18 km long Gegentaler Gangzug , formerly also called Gegenthaler-Wittenberger Zug , running north of Lautenthal in the Harz Mountains , was primarily the subject of mining on Eisenstein west of the Innerstetal , but also on non-ferrous metals in the Ochsental , on the Schweinerücken and in the Heimbergtal . The vein disturbance belonging to the Upper Harz veins is divided into the Gegental , Hahnental , Ochsental , Romkerkopf and Birkental veins . While in general all ore veins north of the Lautenthaler vein train were considered economically uninteresting in terms of their management of non-ferrous , heavy and precious metals , there were older reports that indicated copper ores that were worth building . This and the hypothesis that the brown iron ores mined so far could originate from cementation processes of copper ores, was the reason for an ambitious shaft construction project during the time of the National Socialist four-year plan from 1935.

Course (projected onto the surface of the day)

Opposite gait

Course west of the Scharung with the Hildesheimer-Tal-Gang on Bierweg near Neuekrug not known. Running through the Rödertal - Hundsrücken - Gegentalskopf (Anscharung with the Crystal Mountain coming Transparent transition ) - Schwarzenberg (Anscharung with the Hahn Taler gear) - Wittenberg (Anscharung with the White Hirscher lode ) - Heimbergstal (Anscharung with the Steiger Taler lode ) - Borberg ( from here referred to as Ochsentaler Gang ) - Altar cliffs - Hirschbocksgrund - Langeweth - Glockenberg (corrugation with the Schleifsteintaler Gangzug , continued again as Gegentaler Gang) - Großer Schleifsteinsberg - Heiligenberg - Dicke Bramke - Großes Birkental (expansion in the Romkerkopf Gang and Birkentaler Gang) .

Hahnentaler Gang

The course has been proven in the west almost to the western Harz rim fault. Back of pork (scarfing with the Taternberger Gang ) - Hahnenkopf - Hohestein - Schwarzenberg (scarfing with the Gegentaler Gang).

Romkerkopf gang

Exfoliation of the Gegental Ganges in the Großer Birkental - Romkerhaller waterfall - Romkerkopf - further course in Romkertal not documented.

Birkentaler Gang

Expansion of the Gegental Ganges in the Great Birkental - Ahrendsberger Klippen - Steffentalskopf . Further east not known.

Paragenesis, peculiarities

The well-known ore filling consisted of up to 20 meters thick brown iron stone rubble. Other iron and manganese oxides also appeared, for example hematite and goethite . To the west of the innermost , scanty chalcopyrite , pyrite , galena , and sphalerite mineralizations were encountered. Gaits were quartz , quartz breccias and calcite .

Outcrops

On the Schweinerücken (Hahnentaler Gang), the Zechstein limestone is metasomatically transformed into brown iron stone up to four meters thick. The route of the former Innerstetalbahn cut into the quartz passage there. The outcrop in the Radaustollen (Romkerkopf-Gang) was concreted.

Overview of mining history

The mining of iron ore took place in the period from 1830 to 1925 west of today's Innerste Dam . Most important was the Friederiken tunnel, around 1,200 meters long . The ore extracted were down to the Ruhr area to Hörder mining and metallurgical association sent. The rather high manganese content in the raw ore was economically interesting . The iron content averaged 46.4%. In this area there have always been difficulties with high water inflows, which is why mining finally came to a standstill for the time being. From 1937 to 1945, a re-digestion with the sinking of was Gegentalschachtes by the Preussag AG tried, but they were now looking for non-ferrous metal ores. As expected, there were water retention problems and the gangway was only approached by Siderit in the lead. The 212 meter deep shaft drowned in 1942 after the dewatering was stopped and was finally abandoned in 1945. Today the city of Langelsheim takes drinking water from the shaft. In the more easterly course of the Gegentaler Gangzug, the König David mine on Borberg is particularly well-known, where copper pebbles, galena and zinc blende were extracted at the end of the 18th century , and the St. Anna mine in Ochsental (18th / 19th century ).

literature

  • Horst Immenroth: Wolfshagen in the Harz Mountains - mining and metallurgy . Goslarsche Zeitung, Goslar 2011, ISBN 978-3-9813191-5-6 .
  • Torsten Schröpfer: Treasure trove: Interesting facts about the West Harz mining and metallurgy . 1st edition. Pieper, Clausthal-Zellerfeld 2000, ISBN 3-923605-08-0 .
  • Klaus Stedingk: Lautenthal: mountain town in the Upper Harz; Mining and metallurgical history . Bergwerks- und Geschichtsverein Bergstadt Lautenthal from 1976, Lautenthal 2002, ISBN 3-00-009504-7 .
  • Dieter Stoppel: Course map of the Upper Harz . Federal Institute for Geosciences and Raw Materials, 1981, ISSN  0540-679X .