| | Description | |
| Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Brauns, R., Die Mineralien der Niederrheinischen Vulkangebiete, Schweizerbart, Stuttgart, 1922 | | Data | |
| Mineral Data: | Click here to view Corundum data | | Locality Data: | Click here to view Michels Quarry (incl. Bous Quarry; Geilen Quarry), Niedermendig, Mendig, Eifel Mts, Rhineland-Palatinate, Germany |
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