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

Active since 1838. Gabbronorite with hornfels and marble inclusions, alternating with granitic, syenitic and pegmatitic zones. Rich contact metamorphic and hydrothermal mineralizations.
Located in the Radau valley, 3 km south of Bad Harzburg.
Obtaining permissions for collecting has become very difficult (situation 10/2006).

References:
- Quakenack, K.-H. (1967): Der Mineralbestand eines Kontaktmarmors im Radautal-Gabbro (Harz). Contributions to Mineralogy and Petrology 14, 204-223 (in German).
- Lapis 1978(10), 17
- Der Aufschluss 1981(7/8), 253-273
- Schnorrer-Köhler, G. (1988): Mineralogische Notizen IV, Der Aufschluss, Vol. 39, 153-168
- Emser Hefte 1989(1)
- Schnorrer-Köhler, G. (1991): Mineralogische Notizen V, Der Aufschluss, Vol. 42, 155-171

- http://www.nng.de/werke/harzburg.html
- http://www.mineralienatlas.de/forum/index.php/topic,9494.new/boardseen.html#new