| Locality type: | Alluvials |
| 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 Saint-Marc beach alluvial deposits, Saint-Marc-sur-Mer, Saint-Nazaire, Saint-Nazaire, Loire-Atlantique, Pays de la Loire, France |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1077619 |
| Long-form Identifier: | 1:3:1077619:3 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Chalcedony |
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| 17.6km (10.9 miles) | ⓘLa Tiédenais, Saint-Père-en-Retz, Saint-Nazaire, Loire-Atlantique, Pays de la Loire, France |
| 19.7km (12.2 miles) | ⓘLa Rigaudais, Donges, Saint-Nazaire, Loire-Atlantique, Pays de la Loire, France |
| 21.0km (13.1 miles) | ⓘSem, Donges, Saint-Nazaire, Loire-Atlantique, Pays de la Loire, France |
| 26.4km (16.4 miles) | ⓘKer Olivier, Assérac, Saint-Nazaire, Loire-Atlantique, Pays de la Loire, France |
| 36.6km (22.7 miles) | ⓘChapelle de Planté, Quilly, Saint-Nazaire, Loire-Atlantique, Pays de la Loire, France |
| 42.6km (26.5 miles) | ⓘL'Erdurière, Couëron, Nantes, Loire-Atlantique, Pays de la Loire, France |
| 43.8km (27.2 miles) | ⓘMoye, Couëron, Nantes, Loire-Atlantique, Pays de la Loire, France |
| 48.5km (30.2 miles) | ⓘDuer, Sarzeau, Vannes, Morbihan, Brittany, France |
| 49.3km (30.6 miles) | ⓘLa Grée, Orvault, Nantes, Loire-Atlantique, Pays de la Loire, France |
| 50.3km (31.3 miles) | ⓘLes Maraichères quarry, Bouguenais, Nantes, Loire-Atlantique, Pays de la Loire, France |
| References |
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