Friedewalder sandstone

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Moated castle in Friedewald made of Friedewald sandstone
Baroque three-bowl fountain in Friedewald made of Friedewald sandstone

The Friedewald sandstone is quarried east of Bad Hersfeld in the Hersfeld-Rotenburg district in Hesse in the village of Friedewald am Dreienberg . It originated in the Lower Triassic and belongs to the Solling series of the Middle Buntsandstein . It is still being dismantled today (2008).

Occurrence, mineralogy and color

The deposits of the middle red sandstone are of building block quality. Apart from the quartzitic bond of the sandstones, only small proportions of feldspars and mica occur as secondary components. The Friedewalder sandstone, which belongs to this series, is light gray to gray in color, the color also ranges from pale brown to light yellow. An exact color cannot be determined, as the respective rock layers, as in all sandstones of the Buntsandstein, are colored differently and the color changes frequently.

It is a quartz-bonded sandstone . There are also occasional clay bindings. It consists of 73 percent quartz, 22 percent rock fragments and 5 percent feldspar, the proportion of heavy and opaque minerals is less than 1 percent. The grain size averages 0.5 millimeters with a range of 0.1 to 3 millimeters.

use

This sandstone was mainly used for solid buildings, bricks, window and door frames as well as stairs , facades and in stone carving . The Friedewalder sandstone is a weather-resistant sandstone.

Structures made from Friedewalder sandstone: Friedewalder Wasserschloss, Bishop's Chair in Fulda, facades of the regional association of the German Red Cross in Erfurt, St. Josef Hospital in Schweinfurt, Bavarian State Fire Insurance Munich, Markt Hirschaid fountain . Numerous buildings on the railway were built from this sandstone during the Wilhelminian era .

See also

literature

  • W. Dienemann and O. Burre: The usable rocks of Germany and their deposits with the exception of coal, ores and salts, Enke-Verlag, Stuttgart 1929, p. 258.
  • Wolf-Dieter Grimm: picture atlas of important monument rocks of the Federal Republic of Germany. Published by the Bavarian State Office for Monument Preservation, Lipp-Verlag, Munich 1990, ISBN 3-87490-535-7 .

Web links

Individual evidence

  1. ^ Grimm: Monument Atlas of Important Monument Stones. Rock No. 079 (see literature)