| Locality type: | Quarry |
| Classification |
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| Species: | Opal var: Opal-AN |
| Formula: | SiO2 · nH2O |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Opal-AN data |
| Locality Data: | Click here to view Madonna d'Ongero, Carona, Lugano, Ticino, Switzerland |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 550237 |
| Long-form Identifier: | 1:3:550237:0 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal-AN |
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| 5.9km (3.6 miles) | ⓘPuricelli Quarry, Cavagnano, 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 |
| 45.8km (28.5 miles) | ⓘAlzo, Pella, Novara Province, Piedmont, Italy |
| 50.2km (31.2 miles) | ⓘGrignaschi Quarry, Cosasca, Trontano, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| 56.7km (35.2 miles) | ⓘVerampio-Crego area, Premia, Verbano-Cusio-Ossola Province, Piedmont, Italy |
| 60.4km (37.5 miles) | ⓘLake Tremorgio, Fiesso, Prato (Leventina), Leventina, Ticino, Switzerland |
| 68.1km (42.3 miles) | ⓘGischi glacier (incl. Gischihorn), Binn, Goms, Valais, Switzerland |
| 72.0km (44.7 miles) | ⓘHillehorn northeast slope, Chummibort, Grengiols, Östlich Raron, Valais, Switzerland |
| 82.3km (51.1 miles) | ⓘBreccia outcrop, Triebten lake (Trübten lake), Oberaar lake area, Guttannen, Interlaken-Oberhasli, Bern, Switzerland |
| References |
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