(Steinbruch am Kohnstein, Niedersachswerfen, Nordhausen, Harz, Thüringen, Deutschland)
A large, presently (2008) inactive anhydrite quarry, owned by the 'Harzer Anhydrit-Werke' which is part of the Wildgruber Group.
Located near Niedersachswerfen in the southeastern Harz mountains, 6 km NNW of Nordhausen and 3 km SW of Ilfeld.
Known for the occurrence of several rare borates.
References:
- Siemroth, J. (1992): Die Minerale des Anhydrit-Steinbruches von Niedersachswerfen bei Nordhausen. Lapis 17 (1), 52-55.
- Siemroth, J. (2008): Das Vorkommen von Boratmineralien im Werra-Anhydrit des Steinbruchs Kohnstein bei Niedersachswerfen am Südharz, Der Aufschluss, Vol. 59, 353-366
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Map Reference: 51°32'29"N , 10°45'26"E
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Mineral List:22 entries listed. 22 valid minerals.
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