| 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 El Madroñal Quarry (La Cabrera pluton), Valdemanco, Community of Madrid, Spain |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 708056 |
| Long-form Identifier: | 1:3:708056:2 |
| GUID (UUID V4): | baf54f38-9b68-4380-baec-810fb47553ec |
| Nearest other occurrences of Opal |
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| 1.1km (0.7 miles) | ⓘLos Alisos W Quarry (La Cabrera pluton), Valdemanco, Community of Madrid, Spain |
| 1.8km (1.1 miles) | ⓘPeña Mojada Quarry (Los Alisos E Quarry; La Cabrera pluton), Valdemanco, Community of Madrid, Spain |
| 2.5km (1.5 miles) | ⓘIsabel Quarry (La Saludadora Quarry; La Cabrera pluton), Valdemanco, Community of Madrid, Spain |
| 6.0km (3.8 miles) | ⓘLa Cabrera pluton, La Cabrera, Community of Madrid, Spain |
| 50.5km (31.4 miles) | ⓘCasa Montero, Vicálvaro, Madrid, Community of Madrid, Spain |
| 51.6km (32.1 miles) | ⓘAlmodóvar Hill, Vicálvaro, Madrid, Community of Madrid, Spain |
| 68.6km (42.6 miles) | ⓘMiocene outcrops, Alconada de Maderuelo, Segovia, Castile and Leon, Spain |
| References |
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