| | Description | |
| Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Blass, G.; Graf, H.W., Neufunde von bekannten Fundorten (VI), Mineralien-Welt 3/6, 32-35, 1992 | | Data | |
| Mineral Data: | Click here to view Columbite-(Mn) data | | Locality Data: | Click here to view Thelenberg Mt., Niedermendig, Mendig, Laach lake volcanic complex, Eifel Mts, Rhineland-Palatinate, Germany |
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