| Locality type: | Mine |
| 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 Dr. Tholus Brunnen Mine, Silberberg, Todtnau, Lörrach, Freiburg Region, Baden-Württemberg, Germany |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 166262 |
| Long-form Identifier: | 1:3:166262:7 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Chalcedony |
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| 1.1km (0.7 miles) | ⓘMaus Mine, Silberberg, Todtnau, Lörrach, Freiburg Region, Baden-Württemberg, Germany |
| 2.1km (1.3 miles) | ⓘBrandenberg Mine, Todtnau, Lörrach, Freiburg Region, Baden-Württemberg, Germany |
| 2.4km (1.5 miles) | ⓘFahl, Todtnau, Lörrach, Freiburg Region, Baden-Württemberg, Germany |
| 13.0km (8.1 miles) | ⓘTeufelsgrund Mine, Belchen, Münstertal, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany |
| 18.5km (11.5 miles) | ⓘBad Sulzburg, Sulzburg, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany |
| 20.3km (12.6 miles) | ⓘSandstone quarries, Unteralpfen, Albbruck, Waldshut, Freiburg Region, Baden-Württemberg, Germany |
| 29.6km (18.4 miles) | ⓘPorphyry quarry, Detzeln, Waldshut-Tiengen, Waldshut, Freiburg Region, Baden-Württemberg, Germany |
| 41.6km (25.8 miles) | ⓘHünersedel Quarry, Schweighausen, Schuttertal, Seelbach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany |
| 44.7km (27.8 miles) | ⓘGeisberg Quarry, Schweighausen, Schuttertal, Seelbach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany |
| 46.0km (28.6 miles) | ⓘOre mineralisation, Königsfeld im Schwarzwald, Schwarzwald-Baar-Kreis, Freiburg Region, Baden-Württemberg, Germany |
| References |
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