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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' 26'' North , 10° 32' 47'' East
Latitude & Longitude (decimal): 51.85715, 10.54651
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

var: Labradorite

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

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'

'var: Verdelite'

Tremolite

Vesuvianite

Wollastonite

Zircon

Zoisite


113 valid minerals.

The above list 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

Fromme, J. (1927): Die Minerale des Brockengebirges insbesonderheit des Radautales. Appelhans & Co., Braunschweig, xx pp.

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.

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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