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Biotite from
Gleeser Felder, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany

Classification
Species:'Biotite' (not an IMA approved species)
Formula:K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Confirmation
Validity:Believed Valid
References
References:Sandberger, Fr., Die Mineralien des Laacher Sees, Neues Jahrb. f. Min.,140-148, 1845
Data
Mineral Data:Click here to view Biotite data
Locality Data:Click here to view Gleeser Felder, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
Nearest other occurrences of Biotite
1.3km (0.8 miles) A Veitskopf, Wassenach, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
1.8km (1.1 miles) B Hüttenberg, Glees, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
2.4km (1.5 miles) C Rothenberg, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
2.7km (1.7 miles) D Lorenzfelsen, Nickenich, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
3.3km (2.1 miles) E Kunkskopf, Wassenach, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
3.8km (2.3 miles) F Pumice quarries, Wingertsberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
3.9km (2.4 miles) G Kappiger Ley (Kappiger Lay), Wehr, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
4.0km (2.5 miles) H In den Dellen quarries, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
4.7km (2.9 miles) I Thelenberg, Niedermendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
4.9km (3.1 miles) J Basalt quarries, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.2km (3.3 miles) K Herchenberg, Burgbrohl, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
5.3km (3.3 miles) L Michels Quarry, Hochstein (Hohestein; Forstberg), Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.3km (3.3 miles) M Nickenicher Sattel (Eicher Sattel), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.7km (3.5 miles) N Krufter Ofen, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.7km (3.6 miles) O Rodder Höfe (Roder Höfe; Roderhöfe), Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
6.1km (3.8 miles) P Schellkopf, Brenk, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
6.6km (4.1 miles) Q Tuff outcrops, Hochstein (Hohestein; Forstberg), Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
6.7km (4.2 miles) R Nickenicher Weinberg (Nickenicher Sattelberg), Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
6.8km (4.2 miles) S Riedener Berg, Volkesfeld, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
7.3km (4.5 miles) T Leilenkopf, Brohl-Lützing, Bad Breisig, Ahrweiler, Rhineland-Palatinate, Germany
7.4km (4.6 miles) U Hochsimmer quarries, Hochsimmer volcano, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
7.9km (4.9 miles) V Caspar quarry, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
8.1km (5.0 miles) W Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
8.5km (5.3 miles) X Hannebacher Ley (Hannebacher Lay), Hannebach, Niederzissen, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
8.7km (5.4 miles) Y Ettringer Feld, Southern lava flow, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
8.8km (5.5 miles) Z Korretsberg, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
9.2km (5.7 miles) 0 Plaidter Hummerich, Plaidt, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
9.8km (6.1 miles) 1 Mayener Feld, Southern lava flow, Bellerberg volcano, Ettringen, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
9.9km (6.1 miles) 2 Tönchesberg, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
11.3km (7.0 miles) 3 Eiterköpfe, Ochtendung, Maifeld, Mayen-Koblenz, Rhineland-Palatinate, Germany
12.9km (8.0 miles) 4 Wannenköpfe Quarry, Ochtendung, Maifeld, Mayen-Koblenz, Rhineland-Palatinate, Germany
14.9km (9.3 miles) 5 Karmelenberg, Ochtendung, Maifeld, Mayen-Koblenz, Rhineland-Palatinate, Germany
20.3km (12.6 miles) 6 Niveligsberg, Drees, Kelberg, Vulkaneifel, Rhineland-Palatinate, Germany
23.3km (14.5 miles) 7 Hohenburg (Hohenberg), Berkum, Wachtberg, Siebengebirge, North Rhine-Westphalia, Germany
30.0km (18.6 miles) 8 Stenzelberg, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
31.0km (19.3 miles) 9 Hummerich, Utzerath, Ulmen, Cochem-Zell, Rhineland-Palatinate, Germany
Mineral and/or Locality  
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