| Classification |
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| Species: | Opal |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Opal data |
| Locality Data: | Click here to view Botro ai Marmi, Campiglia Marittima, Livorno Province, Tuscany, Italy |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 830158 |
| Long-form Identifier: | 1:3:830158:1 |
| GUID (UUID V4): | 0 |
| Localities for Opal in this Region |
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| Maffei Mine, Botro ai Marmi, Campiglia Marittima, Livorno Province, Tuscany, Italy |
| Nearest other occurrences of Opal |
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| 1.3km (0.8 miles) | ⓘMaffei Mine, Botro ai Marmi, Campiglia Marittima, Livorno Province, Tuscany, Italy |
| 17.9km (11.1 miles) | ⓘMount Leo, Monterotondo Marittimo, Grosseto Province, Tuscany, Italy |
| 21.9km (13.6 miles) | ⓘPoggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy |
| 23.4km (14.5 miles) | ⓘLa Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy |
| 24.4km (15.2 miles) | ⓘMonterufoli, Pomarance, Pisa Province, Tuscany, Italy |
| 30.6km (19.0 miles) | ⓘTorre di Rio - Santa Filomena area (Monte della Torre), Rio Marina, Rio, Livorno Province, Tuscany, Italy |
| 34.1km (21.2 miles) | ⓘCape Arco Mine, Rio Marina, Rio, Livorno Province, Tuscany, Italy |
| 40.3km (25.0 miles) | ⓘCastiglioncello, Rosignano Marittimo, Livorno Province, Tuscany, Italy |
| 41.5km (25.8 miles) | ⓘPunta Rossa stope, Cape Calamita Mine, Capoliveri, Livorno Province, Tuscany, Italy |
| 42.6km (26.5 miles) | ⓘBotro Massaccio quarry, Rosignano Marittimo, Livorno Province, Tuscany, Italy |
| References |
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Biagioni, C., Orlandi, P., Gini, C., Bargellini, C., Gamucci, C., Marinai, V., Nannoni, R. (2013). Botro ai Marmi. I minerali delle miniere Maffei e Montorsi. Rivista Mineralogica Italiana, 1/2013, 63-83. |
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