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Cordierite from
Wolkenburg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany

Classification
Species:Cordierite
Formula:(Mg,Fe)2Al3(AlSi5O18)
Confirmation
Validity:Believed Valid
References
References:Brauns, R., (1922): Die Mineralien der Niederrheinischen Vulkangebiete, Schweizerbart, Stuttgart
Data
Mineral Data:Click here to view Cordierite data
Locality Data:Click here to view Wolkenburg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
Nearest other occurrences of Cordierite
0.6km (0.4 miles) A Drachenfels, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
2.4km (1.5 miles) B Petersberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
2.8km (1.7 miles) C Stenzelberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
2.8km (1.8 miles) D Ölberg (Oelberg), Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
3.6km (2.3 miles) E Perlenhardt, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
3.8km (2.3 miles) F Lyngsberg (Lühnsberg; Lünsberg), Bad Godesberg, Bonn, Siebengebirge, North Rhine-Westphalia, Germany
9.4km (5.8 miles) G Finkenberg, Bonn, Siebengebirge, North Rhine-Westphalia, Germany
22.3km (13.8 miles) H Herchenberg, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
26.5km (16.5 miles) I Hüttenberg, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
27.4km (17.0 miles) J Gleeser Felder, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
27.9km (17.4 miles) K Nickenicher Sattel (Eicher Sattel), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
28.3km (17.6 miles) L Kappiger Ley (Kappiger Lay), Wehr, Rhineland-Palatinate, Germany
29.2km (18.2 miles) M Rothenberg, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
30.1km (18.7 miles) N Krufter Ofen, Kruft, Mayen-Koblenz, Rhineland-Palatinate, Germany
30.5km (19.0 miles) O Nickenicher Weinberg (Nickenicher Sattelberg), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
30.7km (19.1 miles) P In den Dellen quarries, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
30.9km (19.2 miles) Q Pumice quarries, Wingertsberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
32.0km (19.9 miles) R Thelenberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
32.1km (20.0 miles) S Basalt quarries, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
35.1km (21.8 miles) T Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
36.2km (22.5 miles) U Wannenköpfe Quarry, Ochtendung, Maifeld, Mayen-Koblenz, Rhineland-Palatinate, Germany
39.2km (24.4 miles) V Niveligsberg, Drees, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
43.9km (27.3 miles) W Bocksberg, Müllenbach, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
51.9km (32.2 miles) X Radersberg, Brück, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
55.2km (34.3 miles) Y Kahlenberg, Zilsdorf, Hillesheim, Vulkaneifel, Rhineland-Palatinate, Germany
58.9km (36.6 miles) Z Auf Dickel (incl. Nonnental), Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
62.6km (38.9 miles) 0 Kahlenberg (Auf'm Kopp; Kallenberg), Oberstadtfeld, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
62.9km (39.1 miles) 1 Rother Kopf, Roth, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
64.5km (40.1 miles) 2 Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
131.9km (82.0 miles) 3 Schaumberg, Tholey, St Wendel, Saarland, Germany
147.7km (91.8 miles) 4 Linck marble works, Hochstädten, Bensheim, Odenwald, Hesse, Germany
186.4km (115.8 miles) 5 Michelsberg Quarry, Katzenbuckel, Eberbach, Odenwald, Baden-Württemberg, Germany
Mineral and/or Locality  
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