| Locality type: | Formation |
| 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 Miocene outcrops, Alconada de Maderuelo, Segovia, Castile and Leon, Spain |
| Photo Gallery | View Gallery (3 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1413285 |
| Long-form Identifier: | 1:3:1413285:6 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Opal |
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| 63.8km (39.6 miles) | ⓘLa Cabrera pluton, La Cabrera, Community of Madrid, Spain |
| 66.9km (41.6 miles) | ⓘIsabel Quarry (La Saludadora Quarry; La Cabrera pluton), Valdemanco, Community of Madrid, Spain |
| 68.6km (42.6 miles) | ⓘEl Madroñal Quarry (La Cabrera pluton), Valdemanco, Community of Madrid, Spain |
| 69.1km (43.0 miles) | ⓘPeña Mojada Quarry (Los Alisos E Quarry; La Cabrera pluton), Valdemanco, Community of Madrid, Spain |
| 69.2km (43.0 miles) | ⓘLos Alisos W Quarry (La Cabrera pluton), Valdemanco, Community of Madrid, Spain |
| References |
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Miocene outcrops, Alconada de Maderuelo, Segovia, Castile and Leon, Spain