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Cordierite from
Perlenhardt, 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 Perlenhardt, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
Nearest other occurrences of Cordierite
1.5km (0.9 miles) A Ölberg (Oelberg), Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
3.5km (2.1 miles) B Stenzelberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
3.6km (2.3 miles) C Wolkenburg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
4.2km (2.6 miles) D Drachenfels, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
4.4km (2.8 miles) E Petersberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
7.4km (4.6 miles) F Lyngsberg (Lühnsberg; Lünsberg), Bad Godesberg, Bonn, Siebengebirge, North Rhine-Westphalia, Germany
11.4km (7.1 miles) G Finkenberg, Bonn, Siebengebirge, North Rhine-Westphalia, Germany
22.9km (14.2 miles) H Herchenberg, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
27.5km (17.1 miles) I Hüttenberg, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
28.0km (17.4 miles) J Nickenicher Sattel (Eicher Sattel), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
28.1km (17.5 miles) K Gleeser Felder, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
29.6km (18.4 miles) L Kappiger Ley (Kappiger Lay), Wehr, Rhineland-Palatinate, Germany
30.2km (18.8 miles) M Rothenberg, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
30.5km (18.9 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
31.2km (19.4 miles) P In den Dellen quarries, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
31.4km (19.5 miles) Q Pumice quarries, Wingertsberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
32.6km (20.3 miles) R Thelenberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
32.7km (20.3 miles) S Basalt quarries, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
35.8km (22.3 miles) T Wannenköpfe Quarry, Ochtendung, Maifeld, Mayen-Koblenz, Rhineland-Palatinate, Germany
36.0km (22.4 miles) U Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
41.5km (25.8 miles) V Niveligsberg, Drees, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
46.4km (28.8 miles) W Bocksberg, Müllenbach, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
54.5km (33.9 miles) X Radersberg, Brück, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
58.1km (36.1 miles) Y Kahlenberg, Zilsdorf, Hillesheim, Vulkaneifel, Rhineland-Palatinate, Germany
61.8km (38.4 miles) Z Auf Dickel (incl. Nonnental), Rockeskyll volcanic complex, Rockeskyll, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
65.2km (40.5 miles) 0 Kahlenberg (Auf'm Kopp; Kallenberg), Oberstadtfeld, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
65.9km (41.0 miles) 1 Rother Kopf, Roth, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
67.0km (41.6 miles) 2 Emmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
133.2km (82.8 miles) 3 Schaumberg, Tholey, St Wendel, Saarland, Germany
145.9km (90.7 miles) 4 Linck marble works, Hochstädten, Bensheim, Odenwald, Hesse, Germany
184.6km (114.7 miles) 5 Michelsberg Quarry, Katzenbuckel, Eberbach, Odenwald, Baden-Württemberg, Germany
Mineral and/or Locality  
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