| Locality type: | Quarry |
| Classification |
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| Species: | Quartz var: Chalcedony |
| Formula: | SiO2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Chalcedony data |
| Locality Data: | Click here to view Büschhof Quarry (Schretzmair Quarry), Wirtenbach, Nümbrecht, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 345772 |
| Long-form Identifier: | 1:3:345772:6 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Chalcedony |
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| 31.5km (19.6 miles) | ⓘBasalt quarry, Malscheid (Mahlscheid; Mahlscheiderkopf; Mahlscheider Kopf), Herdorf, Daaden-Herdorf, Altenkirchen, Rhineland-Palatinate, Germany |
| 34.2km (21.3 miles) | ⓘRabenlay (Rabenley), Oberkassel, Beuel, Bonn, Cologne, North Rhine-Westphalia, Germany |
| 34.8km (21.6 miles) | ⓘQuegstein, Wintermühlenhof, Königswinter, Rhein-Sieg-Kreis, Cologne, North Rhine-Westphalia, Germany |
| 38.2km (23.8 miles) | ⓘVirneberg Mine, Rheinbreitbach, Unkel, Neuwied, Rhineland-Palatinate, Germany |
| 38.4km (23.8 miles) | ⓘVenus Mine, Linz am Rhein, Linz am Rhein, Neuwied, Rhineland-Palatinate, Germany |
| 48.1km (29.9 miles) | ⓘConstanze Mine, Langenaubach, Haiger, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany |
| 50.1km (31.1 miles) | ⓘLimestone quarry, Medenbach, Breitscheid, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany |
| 57.1km (35.5 miles) | ⓘNeue Lust Mine, Nanzenbach, Dillenburg, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany |
| 57.6km (35.8 miles) | ⓘKönigszug Mine, Oberscheld, Dillenburg, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany |
| 59.3km (36.8 miles) | ⓘHardtkopf, Hellefeld, Sundern, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany |
| References |
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