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

Classification
Species:Cordierite
Formula:(Mg,Fe)2Al3(AlSi5O18)
Confirmation
Validity:Believed Valid
References
References:Frechen, J., (1976): Siebengebirge am Rhein, Laacher Vulkangebiet, Maargebiet der Westeifel, Bornträger, Berlin Stuttgart
Data
Mineral Data:Click here to view Cordierite data
Locality Data:Click here to view Drachenfels, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
Nearest other occurrences of Cordierite
0.6km (0.4 miles) A Wolkenburg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
2.7km (1.7 miles) B Petersberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
3.3km (2.0 miles) C Stenzelberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
3.3km (2.1 miles) D Lyngsberg (Lühnsberg; Lünsberg), Bad Godesberg, Bonn, Siebengebirge, North Rhine-Westphalia, Germany
3.5km (2.2 miles) E Ölberg (Oelberg), Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
4.2km (2.6 miles) F Perlenhardt, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
9.4km (5.9 miles) G Finkenberg, Bonn, Siebengebirge, North Rhine-Westphalia, Germany
21.9km (13.6 miles) H Herchenberg, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
26.1km (16.2 miles) I Hüttenberg, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
27.0km (16.8 miles) J Gleeser Felder, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
27.7km (17.2 miles) K Nickenicher Sattel (Eicher Sattel), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
27.9km (17.3 miles) L Kappiger Ley (Kappiger Lay), Wehr, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
28.9km (17.9 miles) M Rothenberg, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
30.2km (18.8 miles) N Nickenicher Weinberg (Nickenicher Sattelberg), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
30.4km (18.9 miles) O In den Dellen quarries, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
30.5km (19.0 miles) P Pumice quarries, Wingertsberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
30.8km (19.1 miles) Q Krufter Ofen, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
31.6km (19.6 miles) R Thelenberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
31.8km (19.8 miles) S Basalt quarries, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
34.7km (21.6 miles) T Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
36.0km (22.4 miles) U Wannenköpfe Quarry, Ochtendung, Maifeld, Mayen-Koblenz, Rhineland-Palatinate, Germany
38.7km (24.1 miles) V Niveligsberg, Drees, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
43.3km (26.9 miles) W Bocksberg, Müllenbach, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
51.3km (31.9 miles) X Radersberg, Brück, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
54.6km (33.9 miles) Y Kahlenberg, Zilsdorf, Hillesheim, Vulkaneifel, Rhineland-Palatinate, Germany
59.0km (36.7 miles) Z Auf Dickel (incl. Nonnental), Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
62.0km (38.5 miles) 0 Kahlenberg (Auf'm Kopp; Kallenberg), Oberstadtfeld, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
62.4km (38.8 miles) 1 Rother Kopf, Roth, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
64.0km (39.7 miles) 2 Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
131.5km (81.7 miles) 3 Schaumberg, Tholey, St Wendel, Saarland, Germany
147.7km (91.8 miles) 4 Linck marble works, Hochstädten, Bensheim, Odenwald, Hesse, Germany
186.5km (115.9 miles) 5 Michelsberg Quarry, Katzenbuckel, Eberbach, Odenwald, Baden-Württemberg, Germany
Mineral and/or Locality  
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