|Latitude & Longitude (WGS84):||51° 51' 25'' North , 10° 32' 47'' East|
|Latitude & Longitude (decimal):||51.85715,10.54651|
|Köppen climate type:||Cfb : Temperate oceanic climate|
|Name(s) in local language(s):||Gabbro-Steinbruch (Bärensteinbruch; Gabbrobruch Radautal), Radautal, Bad Harzburg, Harz, Niedersachsen, Deutschland|
Quarry in a Upper Carboniferous intrusion of mafic and ultramafic rocks (gabbro, norite, harzburgite) forming the so-called "Gabbro-Massif".
Active since 1838.
Gabbronorite and ferrogabbro, alternating with granitic, syenitic and pegmatitic zones. Residual melts of more acidic composition intruded to form diorites and granodiorites. Granite dykes with graphic granite and small pockets. Rich contact metamorphic and hydrothermal mineralizations with lenses of calc-silicate rocks, hornfels and marble.
Located in the Radau valley, 3 km south of Bad Harzburg.
The quarry is very interesting to petrologists, but well crystallized mineral specimens are usually very small. Obtaining permissions for collecting has become very difficult (situation 10/2006).
113 valid minerals.
Rock Types Recorded
Select Rock List TypeAlphabetical List Tree Diagram
Entries shown in red are rocks recorded for this region.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Carboniferous - Silurian|
298.9 - 443.8 Ma
|Paleozoic sedimentary rocks|
Age: Paleozoic (298.9 - 443.8 Ma)
Lithology: Sedimentary rocks
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. 
298.9 - 323.2 Ma
323.2 - 358.9 Ma
|Early Carboniferous meta-sandstone|
Age: Mississippian (323.2 - 358.9 Ma)
Description: low grade metamorphic
Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3.