Siebigeröder sandstone

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Right: St. Andrew's Church on the market square in Eisleben, made of sandstone from Siebigerode
The St. Wigbert Church in Kreisfeld is made of Siebigerode sandstone

The Siebigerode sandstone occurs on the southeastern edge of the Harz near the village of Siebigerode in Saxony-Anhalt in the Mansfeld-Südharz district . It is a rock in the Mansfeld strata from the Arkosen family , a feldspar-bearing sandstone . It is a sandstone that was formed in the Upper Carboniferous .

Occurrence

In contrast to the other sandstones of the Mansfeld strata, such as the Annaberger and Blankenheimer sandstones, which are generally only about 35 meters thick, the deposits at Siebigerode are up to 500 meters thick. However, due to the local conditions near Siebigerode, sandstone was mined up to a wall height of 30 to 50 meters. The entire occurrence extends in a few elongated features. In addition to the main occurrence, the layers in Annarode and Blankenheim emerge. There were a number of quarries not only near Siebigerode. The largest quarry in Siebigerode can be entered west of the village on the B 86 . It is under nature protection. Today there is no longer any quarry in operation. In its appearance, this sandstone has similarities with the Weser sandstones .

Rock properties and mineral composition

It is a medium to coarse-grained sandstone that is seldom fine-grained, but is often conglomerate and occasionally carries scree. The reddish, violet to red-gray colored sandstone contains quartz grains, kaolinized feldspars, lydite and milk quartz rubble and muscovite . Its bond is partly kaolin, clayey- ferritic and clayey-quartzitic. Due to the weathering of loose pebbles and pitches, it is partially full of holes. Its compressive strength is low. The technical properties of the rock are best in the area of ​​Siebigerode. There are seldom petrified pieces of wood or tree trunks in this sandstone, some of which are on display in the Siebigerode green area.

use

Stone works, gravestones and millstones were made from Siebigröder sandstone. The deposit was used intensively in the 18th century, especially for the production of around 1,000 millstones annually. This stone was less suitable for sculptural and ornamental work. Examples of its use are the Church of Siebigerode (1851), the St. Andreas and St. Pancratius Church (1893) in Eisleben and the neo-Romanesque St. Wigbert Church in Kreisfeld (1895).

Web links

literature

  • Otto Sickenberg: stones and earth. The deposits and their management. Geology and deposits of Lower Saxony, 5th volume. Dorn-Verlag, Bremen, Horn 1951, pp. 188ff.

Coordinates: 51 ° 33 ′ 51.8 ″  N , 11 ° 25 ′ 44 ″  E