Glücksrad Mine, Oberschulenberg, Clausthal-Zellerfeld, Harz Mts, Lower Saxony, Germany

Ancient lead and zinc mine (abandoned in 1931), working quartz veins of the Bockswiese vein system ('Bockswieser Gangzug').
Located near Oberschulenberg, 2 km west of Schulenberg and about 6 km NE of Clausthal-Zellerfeld.

Note: it seems probable that the relative mineral wealth of this mine (by comparison to closeby mines) is due to a 3-month mine fire around 1721, resulting in pseudo-firesetting assemblages. (see http://www.mineralienatlas.de/forum/index.php/topic,3084.msg158722/topicseen.html#new).

References:
- Lapis 1981(5), 9 ff.
- Lapis 1981(10), 15 ff.
- Wittern, A. and Schnorrer-Köhler, G. (1986): Lapis 11(1), 9-18+42.
- Schnorrer-Köhler, G. (1988): Mineralogische Notizen IV, Der Aufschluss, Vol. 39, 153-168
- Schellhorn, M. (1989): Neufunde von den Halden der Grube Glücksrad bei Oberschulenberg/Harz, Der Aufschluss, Vol. 40(2), 121-123
- Schnorrer-Köhler, G. (1991): Mineralogische Notizen V, Der Aufschluss, Vol. 42, 155-171.