(Grube Mark, Essershausen, Weilburg, Wetzlar, Hessen, Deutschland)
A small abandoned iron mine.
Located near Essershausen, about 5 km SE of Weilburg/Lahn.
Refs.:
- Blaß, G. (2002): Eine neue Phosphatmineralien-Paragenese von der Grube Mark bei Essershausen, mittleres Lahngebiet, Taunus. Mineralien-Welt, 13 (6), 18-43. (in German)
- U. Kolitsch, H.-J. Bernhardt, C. L. Lengauer, G. Blaß and E. Tillmanns (2006): Allanpringite, Fe3(PO4)2(OH)3*5H2O, a new ferric iron phosphate from Germany, and its close relation to wavellite. European Journal of Mineralogy, 18, 793-801.