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Cordierite from
Ölberg (Oelberg), 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 Ölberg (Oelberg), Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
Nearest other occurrences of Cordierite
1.5km (0.9 miles) A Perlenhardt, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
2.0km (1.2 miles) B Stenzelberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
2.8km (1.8 miles) C Wolkenburg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
3.0km (1.9 miles) D Petersberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
3.5km (2.2 miles) E Drachenfels, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
6.4km (3.9 miles) F Lyngsberg (Lühnsberg; Lünsberg), Bad Godesberg, Bonn, Siebengebirge, North Rhine-Westphalia, Germany
10.0km (6.2 miles) G Finkenberg, Bonn, Siebengebirge, North Rhine-Westphalia, Germany
23.7km (14.7 miles) H Herchenberg, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
28.2km (17.5 miles) I Hüttenberg, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
28.9km (18.0 miles) J Gleeser Felder, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
29.0km (18.0 miles) K Nickenicher Sattel (Eicher Sattel), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
30.2km (18.8 miles) L Kappiger Ley (Kappiger Lay), Wehr, Rhineland-Palatinate, Germany
30.9km (19.2 miles) M Rothenberg, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
31.4km (19.5 miles) N Krufter Ofen, Kruft, Mayen-Koblenz, Rhineland-Palatinate, Germany
31.6km (19.6 miles) O Nickenicher Weinberg (Nickenicher Sattelberg), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
32.1km (19.9 miles) P In den Dellen quarries, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
32.3km (20.1 miles) Q Pumice quarries, Wingertsberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
33.4km (20.8 miles) R Thelenberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
33.6km (20.9 miles) S Basalt quarries, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
36.8km (22.8 miles) T Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
41.7km (25.9 miles) U Niveligsberg, Drees, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
46.5km (28.9 miles) V Bocksberg, Müllenbach, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
54.5km (33.9 miles) W Radersberg, Brück, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
58.0km (36.0 miles) X Kahlenberg, Zilsdorf, Hillesheim, Vulkaneifel, Rhineland-Palatinate, Germany
61.7km (38.3 miles) Y Auf Dickel (incl. Nonnental), Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
65.2km (40.5 miles) Z Kahlenberg (Auf'm Kopp; Kallenberg), Oberstadtfeld, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
65.7km (40.8 miles) 0 Rother Kopf, Roth, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
67.1km (41.7 miles) 1 Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
133.9km (83.2 miles) 2 Schaumberg, Tholey, St Wendel, Saarland, Germany
147.3km (91.5 miles) 3 Linck marble works, Hochstädten, Bensheim, Odenwald, Hesse, Germany
186.0km (115.6 miles) 4 Michelsberg Quarry, Katzenbuckel, Eberbach, Odenwald, Baden-Württemberg, Germany
Mineral and/or Locality  
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