Latitude: 49°17'48"N
Longitude: 8°43'14"E
Grube Segen Gottes, Wiesloch, Baden-Württemberg, Deutschland
An old lead and zinc mine, closed in 1953. The mine site and most of the dumps have been landscaped. Part of a dump remains east of the road leading from Altwiesloch to Dielheim, but it is heavily overgrown and most of the sulphides have decomposed into a dark mass that smells of sulphurous oxide.
The mine worked a hydrothermal-metasomatic zinc-lead-silver deposit of Mississippi Valley type (MVT), which is hosted in shell limestones and controlled by a system of SE-trending fractures. The main ore was Schalenblende, composed of sphalerite and galena with minor marcasite and melnikovite (and no wurtzite at this locality !), which often formed botryoidal concretions of a stalactite-like shape that were up to 40 cm long and up to 15 cm across.
A very smilar mineral paragenesis was found in the limestone quarry near Nußloch (see:
http://www.mindat.org/loc-32056.html).
References
- Lapis 1985(12), 23-24.
- Nickel, E., and Fettel, M. (1985): Odenwald. Sammlung geologischer Führer Vol. 65, 2nd ed., Bornträger (Berlin, Stuttgart), 231 pp
- Weiß, S. (1990): Mineralfundstellenatlas, Deutschland West. Weise (Munich), 320 pp.
- Pfaff, K., Hildebrandt, L.H., Leach, D.L., Jacob, D.E., and Markl, G. (2010): Formation of the Wiesloch Mississippi Valley-type Zn-Pb-Ag deposit in the extensional setting of the Upper Rhinegraben, SW Germany. Mineralium Deposita 45, 647-666.
Mineral List
36 entries listed. 31 valid minerals.
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