| 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 Borna di Pugnetto (Grotta di Pugnetto), Pugnetto, Mezzenile, Metropolitan City of Turin, Piedmont, Italy |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1218788 |
| Long-form Identifier: | 1:3:1218788:9 |
| GUID (UUID V4): | 88aaa8de-6e71-4020-8cf5-bd540ac09efc |
| Nearest other occurrences of Opal |
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| 4.0km (2.5 miles) | ⓘFubina, Viù, Metropolitan City of Turin, Piedmont, Italy |
| 8.2km (5.1 miles) | ⓘPoggio San Vittore asbestos mine, Balangero, Metropolitan City of Turin, Piedmont, Italy |
| 11.7km (7.3 miles) | ⓘCivrari Mountain, Condove, Metropolitan City of Turin, Piedmont, Italy |
| 17.4km (10.8 miles) | ⓘCalvo Mt. magnesite quarries (Caselette magnesite quarries), Caselette, Metropolitan City of Turin, Piedmont, Italy |
| 19.0km (11.8 miles) | ⓘSant'Abaco, Caselette, Metropolitan City of Turin, Piedmont, Italy |
| 26.8km (16.7 miles) | ⓘTignai Quarry, Tignai, Bussoleno, Metropolitan City of Turin, Piedmont, Italy |
| 30.8km (19.2 miles) | ⓘSan Valeriano quarry, Piossasco, Metropolitan City of Turin, Piedmont, Italy |
| 52.9km (32.8 miles) | ⓘ"Bardonecchia road" quartzite vein, Oulx, Metropolitan City of Turin, Piedmont, Italy |
| 59.1km (36.7 miles) | ⓘSeccarezze Quarries, Luserna San Giovanni, Metropolitan City of Turin, Piedmont, Italy |
| 59.9km (37.2 miles) | ⓘMonte Cruzore (Monte Cruzeau), Cesana Torinese, Metropolitan City of Turin, Piedmont, Italy |
| References |
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