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Gabbro Quarry (Bärenstein Quarry), Radau valley, Bad Harzburg, Harz, Lower Saxony, Germany

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Latitude & Longitude (WGS84): 51° 51' 25'' North , 10° 32' 47'' East
Latitude & Longitude (decimal): 51.85715,10.54651
GeoHash:G#: u1prpbr9z
Locality type:Quarry
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).




Mineral List

Actinolite

Adamite

var: Cuprian Adamite

Albite

'Albite-Anorthite Series'

Allanite-(Ce)

Almandine

Analcime

Anatase

Andradite

Anorthite

var: Bytownite

Antigorite

'Apatite'

Arfvedsonite

Arseniosiderite

Arsenolite

Arsenopyrite

Augite

Aurichalcite

Axinite-(Fe)

'Biotite'

Brookite

Brucite

Calcite

Cerussite

'Chabazite'

Chalcopyrite

'Chlorite Group'

'var: Brunsvigite'

Chondrodite

Chrysocolla

Chrysotile

Clinochlore

var: Leuchtenbergite

var: Pennine

Clinozoisite

Cobaltite

Cordierite

Corundum

Covellite

Cubanite

Datolite

Diopside

Dolomite

Dravite

Dundasite

Enstatite

Epidote

Epistilbite ?

Erythrite

Fayalite

Ferro-hornblende

Fluorapatite

Fluorapophyllite-(K)

Forsterite

Gadolinite-(Ce)

Galena

Gehlenite

'Gmelinite'

Goethite

Gold

Graphite

Greenockite

Grossular

var: Hibschite

'Grossular-Hibschite Series'

Gypsum

Hedenbergite

Hematite

Hemimorphite

'Heulandite'

Hörnesite

Hydroxylapatite

Hydrozincite

'Hypersthene'

Ilmenite

Jarosite

Kainosite-(Y)

'K Feldspar'

'var: Adularia'

Kimzeyite

'Labradorite'

Laumontite

Lazarenkoite

Löllingite

Magnetite

Malachite

Manganite

Marcasite

Mesolite

Microcline

Mimetite

Molybdenite

Montmorillonite

Muscovite

Natrolite

Orthoclase

Parasymplesite

Pentlandite

Periclase

Pharmacosiderite

'Phillipsite'

Pigeonite

Pitticite

Prehnite

Pyrite

Pyrolusite

Pyrope

Pyrrhotite

Quartz

var: Amethyst

var: Rock Crystal

var: Smoky Quartz

Rhodochrosite

Rhodonite

Rucklidgeite

Rutile

Safflorite

Schorl

Schorlomite

Scorodite

'Serpentine Subgroup'

Spessartine

Sphalerite

Spinel

Stibarsen

Stilbite-Ca

Talc

Titanite

Todorokite

'Tourmaline'

Tremolite

'Verdelite'

Vesuvianite

Wollastonite

Zircon

Zoisite


113 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Regional Geology

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



ID: 3191443
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. [154]

Late Carboniferous
298.9 - 323.2 Ma



ID: 2617029

Age: Pennsylvanian (298.9 - 323.2 Ma)

Description: plutonic

Comments: Also ultrabasite in the Harz, postasturisch

Lithology: Gabbro

Reference: Toloczyki, M., P. Trurnit, A. Voges, H. Wittekindt, A. Zitzmann. Geological Map of Germany 1:M. Bundesanstalt für Geowissenschaften und Rohstoffe. [94]

Early Carboniferous
323.2 - 358.9 Ma



ID: 3158292
Early Carboniferous meta-sandstone

Age: Mississippian (323.2 - 358.9 Ma)

Description: low grade metamorphic

Lithology: Major:{meta-sandstone}, Minor{schist group,meta-conglomerate,quartzite}

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. [147]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Fromme, J. (1927): Die Minerale des Brockengebirges insbesonderheit des Radautales. Appelhans & Co., Braunschweig, xx pp.
Frebold, G. (1928): Petrographische Studien an exogenen Einschlüssen und Kontaktgesteinen aus dem Gebiete des Harzburger Gabbros.- N. Jb. Mineral. u. Geol., Abt. A, Beil.-Bd. 57, 287-330.
Fromme, J. (1929): Bemerkungen über das Granat-Vesuviangestein im Gabbro des Radautales.- Zentralbl. f. Mineral. u. Geol., A, (1929) Nr. 2, 99-103.
Quakenack, K.-H. (1967) Der Mineralbestand eines Kontaktmarmors im Radautal-Gabbro (Harz). Contributions to Mineralogy and Petrology 14, 204-223 (in German).
Koritnig, S. (1968): Die Mineralien des Gabbrosteinbruches am Bärenstein im Radautal. Aufschluss, Sonderheft 17, 36-42.
Steinkamm, U. (1969): Apatit aus der Marmor-Kalksilikatfels-Scholle des Gabbrosteinbruchs im Radautal bei Bad Harzburg.- Der Aufschluss, 20 (4), 109-110.
Lapis 1978 (10), 17
Gebhard, G. (1978): Mineralogische Notizen aus dem Harz. Lapis, 3 (10), 16-19.
Steinkamm, U. & Schnorrer-Köhler, G. (1981): Der Gabbrosteinbruch im Radautal bei Bad Harzburg und seine Minerale. Aufschluss, 32 (7/8), 253-273.
Schnorrer-Köhler, G. (1988): Mineralogische Notizen IV, Der Aufschluss 39: 153-168
Steinkamm, U. (1989): Der Gabbro-Steinbruch im Radautal bei Bad Harzburg. Emser Hefte, issue 1, xx-xx.
Steinkamm U. (1989): Der Gabbro-Steinbruch bei Bad Harzburg. Bode Verlag, 48 pp.
Schnorrer-Köhler, G. (1991): Mineralogische Notizen V. Der Aufschluss 42, 155-171.
Schnorrer, G. (2004): Mineralogische Notizen VIII. Der Aufschluss, 55 (6), 381-384.

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