| Locality type: | Quarry |
| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Todorokite | ⓘ2 photos of Opal associated with Todorokite at this locality. |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Calvo Mt. magnesite quarries (Caselette magnesite quarries), Caselette, Metropolitan City of Turin, Piedmont, Italy |
| Photo Gallery | View Gallery (3 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 530820 |
| Long-form Identifier: | 1:3:530820:0 |
| GUID (UUID V4): | 90783bb3-0f93-40c5-ac2a-f002e4314a32 |
| Nearest other occurrences of Opal |
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| 1.7km (1.0 miles) | ⓘSant'Abaco, Caselette, Metropolitan City of Turin, Piedmont, Italy |
| 13.1km (8.2 miles) | ⓘCivrari Mountain, Condove, Metropolitan City of Turin, Piedmont, Italy |
| 14.0km (8.7 miles) | ⓘSan Valeriano quarry, Piossasco, Metropolitan City of Turin, Piedmont, Italy |
| 14.0km (8.7 miles) | ⓘFubina, Viù, Metropolitan City of Turin, Piedmont, Italy |
| 17.4km (10.8 miles) | ⓘBorna di Pugnetto (Grotta di Pugnetto), Pugnetto, Mezzenile, Metropolitan City of Turin, Piedmont, Italy |
| 19.1km (11.9 miles) | ⓘPoggio San Vittore asbestos mine, Balangero, Metropolitan City of Turin, Piedmont, Italy |
| 26.2km (16.3 miles) | ⓘTignai Quarry, Tignai, Bussoleno, Metropolitan City of Turin, Piedmont, Italy |
| 45.5km (28.3 miles) | ⓘSeccarezze Quarries, Luserna San Giovanni, Metropolitan City of Turin, Piedmont, Italy |
| 46.0km (28.6 miles) | ⓘPravallino Quarry, Montoso Quarries, Bagnolo Piemonte, Cuneo Province, Piedmont, Italy |
| 52.1km (32.4 miles) | ⓘ"Bardonecchia road" quartzite vein, Oulx, Metropolitan City of Turin, Piedmont, Italy |
| References |
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Calvo Mt. magnesite quarries, Caselette, Metropolitan City of Turin, Piedmont, Italy