| Locality type: | Quarry |
| 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 Bonomi Quarry, Cuasso al Piano, Cuasso al Monte, Varese Province, Lombardy, Italy |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1022008 |
| Long-form Identifier: | 1:3:1022008:3 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal |
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| 0.3km (0.2 miles) | ⓘSubalpina Quarry (Mantegazza Quarry; Gebel Quarry; Bianchi Quarry), Cavagnano, Cuasso al Monte, Varese Province, Lombardy, Italy |
| 0.5km (0.3 miles) | ⓘLaghetto Quarry, Cavagnano, Cuasso al Monte, Varese Province, Lombardy, Italy |
| 1.0km (0.6 miles) | ⓘPuricelli Quarry, Cavagnano, Cuasso al Monte, Varese Province, Lombardy, Italy |
| 6.4km (4.0 miles) | ⓘMadonna d'Ongero, Carona, Lugano, Ticino, Switzerland |
| 30.7km (19.1 miles) | ⓘSeula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| 32.2km (20.0 miles) | ⓘSementina, Bellinzona, Bellinzona, Ticino, Switzerland |
| 32.8km (20.4 miles) | ⓘMont'Orfano (Montorfano), Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| 39.0km (24.2 miles) | ⓘNibbio-Val Faera (Nibbio-Val Fredda) pegmatites, Nibbio, Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| 39.6km (24.6 miles) | ⓘPiano del Lavonchio (Piano dei Lavonchi), Rio Vasca, Craveggia, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| 39.6km (24.6 miles) | ⓘEglio, Craveggia, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| References |
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