| 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 Madonna d'Ongero, Carona, Lugano, Ticino, Switzerland |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1000370 |
| Long-form Identifier: | 1:3:1000370:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal |
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| 5.9km (3.6 miles) | ⓘPuricelli Quarry, Cavagnano, Cuasso al Monte, Varese Province, Lombardy, Italy |
| 6.2km (3.8 miles) | ⓘLaghetto Quarry, Cavagnano, Cuasso al Monte, Varese Province, Lombardy, Italy |
| 6.2km (3.9 miles) | ⓘSubalpina Quarry (Mantegazza Quarry; Gebel Quarry; Bianchi Quarry), Cavagnano, Cuasso al Monte, Varese Province, Lombardy, Italy |
| 6.4km (4.0 miles) | ⓘBonomi Quarry, Cuasso al Piano, Cuasso al Monte, Varese Province, Lombardy, Italy |
| 26.2km (16.3 miles) | ⓘSementina, Bellinzona, Bellinzona, Ticino, Switzerland |
| 34.4km (21.3 miles) | ⓘSeula mine, Mount Camoscio, Oltrefiume, Baveno, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| 36.0km (22.4 miles) | ⓘMont'Orfano (Montorfano), Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| 38.9km (24.2 miles) | ⓘPiano del Lavonchio (Piano dei Lavonchi), Rio Vasca, Craveggia, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| 39.1km (24.3 miles) | ⓘEglio, Craveggia, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| 41.3km (25.7 miles) | ⓘNibbio-Val Faera (Nibbio-Val Fredda) pegmatites, Nibbio, Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| References |
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