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Quegstein, Königswinter, Siebengebirge, North Rhine-Westphalia, Germany
List of minerals arranged by Strunz 10th Edition classification
| Group 4 - Oxides and Hydroxides | ||
|---|---|---|
| Opal | 4.DA.10 | SiO2 · nH2O |
| Group 9 - Silicates | ||
| Zircon | 9.AD.30 | ZrSiO4 |
2 entries listed. 2 valid minerals.
References
Dechen, H. von (1852): Geognostische Beschreibung des Siebengebirges am Rhein, Cohen Bonn
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