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Gabbro Quarry (Bärenstein Quarry), Bad Harzburg, Harz, Lower Saxony, Germany
Gabbro-Steinbruch (Bärensteinbruch; Gabbrobruch 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
135 entries listed. 110 valid minerals.
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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.
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.
External Links
http://www.nng.de/werke/harzburg.html [Link Broken? Jun 2013]
http://www.mineralienatlas.de/forum/index.php/topic,9494.new/boardseen.html#new
http://www.mineralienatlas.de/forum/index.php/topic,9494.new/boardseen.html#new
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Updated Mineral Entry: BurpaliteFrom Uwe Kolitsch, 19th Jun 2013 07:01:17