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Cordierite from
Finkenberg, Bonn, 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 Finkenberg, Bonn, Siebengebirge, North Rhine-Westphalia, Germany
Nearest other occurrences of Cordierite
7.2km (4.5 miles) A Petersberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
7.8km (4.8 miles) B Lyngsberg (Lühnsberg; Lünsberg), Bad Godesberg, Bonn, Siebengebirge, North Rhine-Westphalia, Germany
8.0km (4.9 miles) C Stenzelberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
9.2km (5.7 miles) D Wolkenburg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
9.4km (5.9 miles) E Drachenfels, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
10.0km (6.2 miles) F Ölberg (Oelberg), Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
11.4km (7.1 miles) G Perlenhardt, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
30.7km (19.1 miles) H Herchenberg, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
34.5km (21.4 miles) I Hüttenberg, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
35.6km (22.1 miles) J Gleeser Felder, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
35.9km (22.3 miles) K Kappiger Ley (Kappiger Lay), Wehr, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
36.8km (22.9 miles) L Nickenicher Sattel (Eicher Sattel), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
37.2km (23.1 miles) M Rothenberg, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
39.2km (24.3 miles) N In den Dellen quarries, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
39.2km (24.4 miles) O Pumice quarries, Wingertsberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
39.4km (24.5 miles) P Nickenicher Weinberg (Nickenicher Sattelberg), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
39.8km (24.7 miles) Q Krufter Ofen, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
40.2km (25.0 miles) R Thelenberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
40.5km (25.2 miles) S Basalt quarries, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
43.0km (26.7 miles) T Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
44.4km (27.6 miles) U Niveligsberg, Drees, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
45.3km (28.2 miles) V Wannenköpfe Quarry, Ochtendung, Maifeld, Mayen-Koblenz, Rhineland-Palatinate, Germany
48.4km (30.1 miles) W Bocksberg, Müllenbach, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
55.7km (34.6 miles) X Radersberg, Brück, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
58.3km (36.2 miles) Y Kahlenberg, Zilsdorf, Hillesheim, Vulkaneifel, Rhineland-Palatinate, Germany
62.2km (38.6 miles) Z Auf Dickel (incl. Nonnental), Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
65.2km (40.5 miles) 0 Rother Kopf, Roth, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
66.5km (41.3 miles) 1 Kahlenberg (Auf'm Kopp; Kallenberg), Oberstadtfeld, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
69.0km (42.9 miles) 2 Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
138.8km (86.3 miles) 3 Schaumberg, Tholey, St Wendel, Saarland, Germany
157.1km (97.6 miles) 4 Linck marble works, Hochstädten, Bensheim, Odenwald, Hesse, Germany
195.8km (121.6 miles) 5 Michelsberg Quarry, Katzenbuckel, Eberbach, Odenwald, Baden-Württemberg, Germany
Mineral and/or Locality  
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